Math Is Fun Forum

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solutions #4103 and #4104 are correct. Good work!

#4105. 15 men complete a job in 12 days. How many days would 18 men take to complete the same job?

#4106. 'A' alone completes a job in 12 days while 'B' alone takes 24 days to complete the same. If 'A' and 'B' work together, in how many days would the job take completed?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solution #4106 is correct. Well done!

#4107. A works twice as fast as B. If both of them together take 6 days to complete the work, in how many days can B alone complete the same work?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solution #4107 is correct. Marvelous!

#4108. If 10 people, working 8 hours a day, can complete a task in 24 days, how many people working 10 hours a day would be required to complete the same task in 16 days?

#4109. If 10 men can complete a piece of work in 30 days, how many men are required to complete the same job in 25 days?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solutions #4108 and #4109 are correct. Good work!

#4110. 10 men can complete a work in 18 days. After 6 days, 5 more men joined. In how many days the remaining work would be completed?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solution #4110 is correct. Brilliant!

#4111. A man works twice as fast as a woman. A woman works twice as fast as a child. If 16 men can complete a job in 12 days, how many days would be required for 32 women and 64 boys together to complete the same job?

#4112. A alone can complete a job in 12 days. B alone can complete the same job in 18 days. If both of them work together, in how many days would the job be completed (in decimals)?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solutions #4111 and #4112 are correct. Brilliant!

#4113. 12 men working 8 hours a day can complete  task in 16 days. If the same task must be completed in 8 days, how many more people would be required if all of them work for 12 hours a day?

#4114. A and B together can do a piece of work in 12 days. B and C can do the same in 15 days. If A is twice as fast as C, in what period of time would B alone complete the work?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solution #4114 is correct. Good work!

#4115. The average age of a class of 50 students is 24 years. If the average of 10 of them is 22 years while the average of another 10 is 26 years. What is the average of the remaining 30 students?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solution #4115 is correct. Excellent!

#4116. How many steps a man whose length of pace is 32 inches take a mile?

#4117. Three bells toll at intervals of 1.2, 1.8, and 2.7 seconds beginning together. How often would each toll before their tolling together?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solutions #4116 and #4117 are correct. Excellent!

#4118. The remainder after a division is 97, the quotient is 521 and the divisor is 9 more than the sum of both. What is the dividend?

#4119. A whole number diminished by 1/5 of itself, when divided by 307 gives a quotient 12 and a remainder 96. What is the number?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solution #4119 is correct. Excellent!

#4120. A 175 meters long train is traveling at the speed of 36 kilometers per hour. In how many seconds would it cross a bridge 625 meters long?

#4121. A train traveling at 54 kilometers per hour crosses a 600 meters long tunnel in 1 minute. What is the length of the train in meters?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solutions #4120 and #4121 are correct. Excellent!

#4122. A boat takes 6 hours to go upstream but returns in just two hours through the same distance. If the speed of the current is 2 kilometers per hour, what would be the speed of the boat?

#4123. The speed of the boat in still water is 12 kilometers per hour. It can travel downstream through 45 kilometers in 3 hours. In what time would it cover the same distance upstream?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,403

Re: 10 second questions

Hi bobbym,

The solutions #4122 and #4123 are correct. Marvelous!

#4124. The speed of a boat in still water is 10 kilometers per hour. If it can travel downstream 20 kilometers in the same time as it can travel 12 kilometers upstream. What is the speed of the current?

#4125. A boat can travel downstream through a distance of 20 kilometers in 1 hour but takes 2 hours to travel upstream through the same distance. What is the ratio of the boat to that of current?

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.