Math Is Fun Forum

Jai Ganesh

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Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

Neat work, Monox D. I-Fly! The solution #4470 is perfect!

#4471.Area of a rectangular field is 3584 square meters and the length and the breadth are in the ratio 7 : 2 respectively. What is the perimeter of the rectangle?

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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.

Monox D. I-Fly

Member

From: Indonesia

Registered: 2015-12-02

Posts: 2,000

Re: Oral puzzles

---

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

Good attempt, Monox D. I-Fly!

#4472. Alvin invests $64,000 in a business. After a few months, Barley joined him with $48,000. At the end of the year, the profit was divided between them in the ratio 2 : 1. After how many months did Barley join?

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4473. The ratio of the ages of A and B seven years ago was 3 : 4 respectively. The ratio of their ages nine years from now will be 7 : 8 respectively. What is B's present age?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4474. Present ages of father and son are in the ratio of 6 : 1 respectively. Four years later, the ratio of their ages will become 4 : 1. What is the son's present age?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4475. The ratio of the ages of Reginald and Stephen is 5 : 8. The ratio of their ages 10 years hence will be 7 : 10. What is the present age of Stephen?

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4476. Find the value 

if

.

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

.

#4477. The respective ratio between the present ages of father, mother, and daughter is 7 : 6 : 2. The difference between mother's age and daughter's age is 24 years. What is the father's present age?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4478. Beena and Meena started a boutique investing an amount of $35000 and $56000 respectively. If Beena's share in the profit earned by them is $45000, what is the total profit earned?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4479. The ratio of the boys and girls in a class is 6 : 5. If 8 more boys join the class and two girls leave the class, the ratio becomes 11 : 7. What is the number of boys in the class now?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4480. If 50% of Simon's salary is equal to 40% of Roger's salary and their total salary is $36000, find Roger's salary.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

.

#4481. Number of students in 4th class and 5th class is in the ratio 6 : 11. 40% in class 4 are girls and 48% in class 5 are girls. What is the percentage of students in both the classes are boys?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4482. The ratio of the ages of A and B is 6 : 7 respectively. The ratio of the ages 8 years hence would be 8 : 9. What would be the ratio of their ages after 12 years?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4483. Find is the sum of the zeroes of of

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

.

#4484. Evaluate:

.

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

.

#4485. Find the sum of the given series:
1 + 2 + 3 + ... + 120.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

.

#4486. Check whether (x - 3) is a factor of the polynomial

.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4487. 1 is added to the product of two consecutive even numbers gives 289. What are the numbers?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4488. The length of a rectangle is 10 centimeters more than the breadth, and its area is 144 square centimeters. What are the length and breadth?

---

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.

Monox D. I-Fly

Member

From: Indonesia

Registered: 2015-12-02

Posts: 2,000

Re: Oral puzzles

---

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

The solution #4488 is correct. Marvelous, Monox D. I-Fly!

#4489. The sum of squares of two consecutive multiples of 7 is 637. Find the multiples.

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4490. The perimeter of a rectangle is 28 meters and its diagonal is 10 meters. What are the lengths of the sides?

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4491. Find the value of x.

.

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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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

#4492. If

find the value of

?

---

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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,389

Re: Oral puzzles

Hi,

.

#4493. Two dice are thrown simultaneously. Find the probability of obtaining a total score of 5.

---

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.