Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1826 2012-04-29 00:08:20
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#1827 2012-04-29 18:03:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The
Marvelous, anonimnystefy!
#1445. In an examination, 35% of the examinees failed in General Knowledge, and 25% in English. If 10% of the examinees failed in both, then what is the percentage of examinees passed?
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.
Offline
#1828 2012-04-29 18:10:20
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1829 2012-04-30 23:21:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1445 is correct. Brilliant!
#1446. On a certain sum, the simple interest at the end of 6.25 years becomes 0.375 of the sum. What is the rate percent?
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.
Offline
#1830 2012-05-01 00:15:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1831 2012-05-01 02:19:26
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1446 is correct. Excellent!
#1447. 16 men complete one-fourth of a piece of work in 12 days. What is the additional number of men required to complete the work in 12 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.
Offline
#1832 2012-05-01 05:21:10
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1833 2012-05-02 00:38:07
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1447 is perfect. Excellent!
#1448. A can do a piece of work in 14 days which B can do in 21 days. They begin together but 3 days before the completion of the work, A leaves off. What is the total number of days to 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.
Offline
#1834 2012-05-02 02:16:18
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1835 2012-05-02 23:05:31
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1448 is correct. Brilliant!
#1449. What is the number of grams of water needed to reduce 9 grams of shaving lotion containing 50% alcohol to a lotion containing 30% alcohol?
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.
Offline
#1836 2012-05-02 23:11:46
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1837 2012-05-03 20:38:16
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym,
The solution #1449 is correct. Marvelous!
#1450. A car covers four successive three kilometer stretches at speeds of 10 km/hour, 20 km/hour, 30 km/hour, and 60 km/hour. What is its average speed over this distance?
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.
Offline
#1838 2012-05-03 20:58:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1839 2012-05-04 00:11:22
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#1840 2012-05-04 00:30:21
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi bobbym and anonimnystefy,
The solution #1450 is correct. Stupendous!
#1451. A cistern has a leak which would empty it in 8 hours. A tap is turned on which admits 6 liters a minute into the cistern, and it is now empties in 12 hours. How many liters does the cistern hold?
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.
Offline
#1841 2012-05-04 00:35:35
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#1842 2012-05-04 02:51:34
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1843 2012-05-04 21:42:55
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1451 is correct. Magnificent!
#1452. A car completes a certain journey in 8 hours. It covers half the distance at 40 kilometers per hour and the rest at 60 kilometers per hour. What is the length of the journey?
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.
Offline
#1844 2012-05-04 22:12:34
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#1845 2012-05-04 22:25:49
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1846 2012-05-05 21:37:44
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1452 is correct. Brilliant!
#1453. A is twice as good a workman as B and together, they finish a work in 14 days. In how many days A alone can finish 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.
Offline
#1847 2012-05-05 22:32:44
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Oral puzzles
Hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#1848 2012-05-05 23:30:10
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline
#1849 2012-05-06 20:34:09
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,422
Re: Oral puzzles
Hi anonimnystefy and bobbym,
The solution #1453 is correct. Good work!
#1454. If
, then what are the values of a and b?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.
Offline
#1850 2012-05-06 21:49:44
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Oral puzzles
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.
Offline