Math Is Fun Forum

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Oral puzzles

Hi

.

#4417. The arithmetic mean of 100 numbers computed as 89.05. It was later found that two numbers 92 and 83 have misread as 192 and 33 respectively, what is the correct arithmetic mean of 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.

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: 48,385

Re: Oral puzzles

Hi,

.

The solution #4417 is correct. Neat work, Monox D. I-Fly!

#4418. The average weight of 21 boys was recorded as 64 kilograms. If the weight of the teacher was added, the average increased by 1 kilogram. What was the teacher's weight?

---

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: 48,385

Re: Oral puzzles

Hi,

#4419. There are 1224 students in a school in which 600 are girls. What is the ratio of boys to girls in the school?

---

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: 48,385

Re: Oral puzzles

Hi,

.

#4420. Stuart's age is one-fourth of his father's age and two-third of his sister Raechel's age. What is the ratio of the ages of Stuart, Raechel, and their father respectively?

---

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: 48,385

Re: Oral puzzles

Hi,

The solution #4420 is correct. Neat work, Monox D. I-Fly!

#4421. Antony started a business investing $45000. Six months later, Paul joined him with $30000. In what ratio should the profit they earn at the end of the year?

---

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: 48,385

Re: Oral puzzles

Hi,

#4422. The ages of Alex and Albert are in the ratio 11:13. After 7 years, the ratio of their ages will be 20:23. What is the difference in years between their ages?

---

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: 48,385

Re: Oral puzzles

Hi,

The solution #4422 is correct. Neat work, Monox D. I-Fly!

#4423. The total number of students in a school is 819. If the number of the girls in the school is 364, then that is the respective ratio of the total number of boys and total number of girls in the school?

---

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: 48,385

Re: Oral puzzles

Hi,

The solution #4423 is correct. Neat work, Monox D. I-Fly!

#4424. If a dividend of $57,834 is divided among A, B, and C in the ratio 3 : 2 : 1, find B's share.

---

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: 48,385

Re: Oral puzzles

Hi,

The solution #4424 is correct. Neat work, Monox D. I-Fly!

#4425. Roger and Parker started a business initially with $5100 and $6600 respectively. If the total profit is $2730, what is Roger's share in the profit?

---

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: 48,385

Re: Oral puzzles

Hi,

.

#4426. The ratio of the ages of Sam and Kevin is 3 : 8 respectively. Seven years hence, the ratio of their ages will be 4 : 9. What is Kevin'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: 48,385

Re: Oral puzzles

Hi,

#4427. The difference between the present ages of Arnold and Daniel is 14 years. Seven years ago, the ratio of their ages was 5 : 7 respectively. What is Daniel'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.

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: 48,385

Re: Oral puzzles

Hi,

The solution #4427 is correct. Excellent, Monox D. I-Fly!

#4428. Find the value of w.

.

---

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: 48,385

Re: Oral puzzles

Hi,

.

The solution #4428 is correct. Excellent, Monox D. I-Fly!

#4429. The ratio of the ages of a father and son is 17 : 7. Six years ago, the ratio of their ages was 3 : 1. 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.

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: 48,385

Re: Oral puzzles

Hi,

The solution #4429 is correct. Neat work, Monox D. I-Fly!

#4430. A sum of money is divided among A, B, C, and D in the ratio of 3 : 4 : 9 : 10 respectively. If the share of C is $2580 more than the share of B, then what is the total amount of money of A and D 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.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

Re: Oral puzzles

Hi,

.

#4431. In a mixture of milk and water, the proportion of water by weight was 75%. If 60 grams of this mixture, 15 grams of water was added, what would be the percentage of water?

---

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: 48,385

Re: Oral puzzles

Hi,

#4432. The average age of a man and his son is 48 years. The ratio of their ages is 5 : 3 respectively. What is the son's 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.