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#6751 2020-12-27 14:27:06

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Good work!

#4887. 15 years ago, Allan was half the age of Keith in age. If the ratio of their present age is 2 : 3, what will be the absolute difference of their present 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.

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#6752 2020-12-29 00:04:19

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4888. P is 5 years older than Q who is twice as old as R. If the total of the ages of P, Q, and R be 55 years, how old is P?


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.

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#6753 2020-12-31 14:04:52

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4889. A is 30 years older than his son. In 5 years, his age will be 2.5 times of the age of his son. Find the present age of the son.


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.

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#6754 2020-12-31 17:08:46

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: Oral puzzles

Hi,


koko28.png

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#6755 2020-12-31 17:32:14

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Neat work!

#4890. 10 years ago, Victor was three times as old as Ralph. Now, Victor is 40 years older than Ralph. Find the present ratio of ages of Victor and Ralph.


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.

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#6756 2021-01-02 00:27:41

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4891. 10 years ago, Chris was 3 times as old as Alec. Chris would be 2 times of Alec's age 10 years from now. What is the current ratio Chri's age to that of Alec?


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.

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#6757 2021-01-04 00:07:10

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4892. The age of father 15 years ago was twice the age of his son. Five years hence, the fathers age will be 1.5 times that of his son. Find the ratio of their present 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.

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#6758 2021-01-06 00:04:29

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4893. The total ages of Albert and Stephen is 14 years more than the total age of Stephen and Sam. Sam is how many years younger than Albert?


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.

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#6759 2021-01-06 07:12:06

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Oral puzzles


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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#6760 2021-01-06 13:34:06

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Good work!

#4894. 6 years ago, the father's age was four times the age of his son. The total of the ages of the father and the son after 6 years will be 54 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.

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#6761 2021-01-08 00:10:22

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4895. Arthur said to his son : "I was two years older than you are at the present time of your birth." If the Arthur's age is 40 years now, find the sons 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.

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#6762 2021-01-10 00:04:32

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4896. The sum of the ages of 4 children born in the intervals of 2 years each is 28 years. What is the age of the youngest child?


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.

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#6763 2021-01-10 03:55:13

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Oral puzzles


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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#6764 2021-01-10 13:54:16

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Neat work!

#4897. The ratio of the present ages of two friends is 1 : 4 and 4 years back, the ratio was 1 : 7. What will be the ratio of their ages after 10 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.

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#6765 2021-01-11 03:58:57

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Oral puzzles


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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#6766 2021-01-11 14:45:32

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Good work!

#4898. The sum of the present ages of Alfred, Victor and Stephen is 75 years. Five years ago, the ratio of their ages was 3 : 4 : 5. What is the present age of Stephen?


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.

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#6767 2021-01-11 15:46:36

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: Oral puzzles

Hello ganesh,


koko28.png

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#6768 2021-01-12 00:18:21

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi Denominator,

Neat work!

#4899. The sum of the present ages of Andy and his son is 50 years. Five years ago, Andy's age was seven times the age of his son. After five years, what will Andy's age be?


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.

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#6769 2021-01-12 04:46:12

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Oral puzzles

Last edited by irspow (2021-01-12 04:46:50)


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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#6770 2021-01-12 13:52:44

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Neat work!

#4900. The age of Patrick is four times the sum of the ages of his two grandsons. Five years hence, his age will be 40 years more than the sum of the ages of his grandsons. Find Patrick'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.

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#6771 2021-01-14 00:03:32

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

#4901. If a number is increased by 4 and divided by 8, the result is 6. What would be the reseult if 2 is added to the number and then it is didided by 23?


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.

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#6772 2021-01-14 03:12:00

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Oral puzzles


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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#6773 2021-01-14 14:30:18

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Neat work!

#4902. Three-fifth of a number is 35 times more than its one-fourth. Find 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.

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#6774 2021-01-15 05:12:52

irspow
Member
Registered: 2005-11-24
Posts: 1,055

Re: Oral puzzles


I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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#6775 2021-01-15 13:57:14

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,956

Re: Oral puzzles

Hi,

Well tried!

#4903. What is the product of two consecutive odd numbers, the difference of whose squares is 40?


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.

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