23
Q:

The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest)

A) 19 years B) 16 years
C) 18 years D) 20 years

Answer:   D) 20 years



Explanation:

Present total age of the members = 26(5) = 130 years.

 

Present age of the youngest member = 10 years

 

Present total age of the remaining four members = 130 -10 = 120 years

 

Their average age at the time of the birth of the youngest member = 120-4×104 = 30 - 10 = 20 years.

Q:

A group of three friends, K, L and M, are sitting in a cafe. Their average age is 24 years. Another friend ‘N’ joins the group and the new average age of the group becomes 23 years. If another friend ‘R’, whose age is 2 years more than that of ‘N’, replaces ‘K’, then the average age of L. M, N and R becomes 22.5 years. What is the age of K?

 

A) 15 years B) 10 years
C) 12 years D) 14 years
 
Answer & Explanation Answer: D) 14 years

Explanation:
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0 68
Q:

The average age of A and B is 20 years. and that of B and C is 25 years. What is the age of A?

 

A) 25 years B) 10 years
C) 15 years D) 20 years
 
Answer & Explanation Answer: B) 10 years

Explanation:
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3 652
Q:

The sum of the current ages of A and B is 77 years. Seven years ago A was 2.5 times as old as B. What is A's present 4 age?

 

 

A) 50 years B) 54 years
C) 48 years D) 52 years
 
Answer & Explanation Answer: D) 52 years

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0 351
Q:

Sourish is now 25 years old while his cousin is 7 years. After how many years will Sourish's age be 2.5 times that of his cousin?

 

A) Emperor Humayun B) Emperor Babur
C) Emperor Akbar D) Emperor Jahans
 
Answer & Explanation Answer: C) Emperor Akbar

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1 146
Q:

Mohan's mother was four times as old as Mohan ten years ago. After 10 years, she will be twice as old as Mohan. How old is Mohan today?

 

A) 20 years B) 15 years
C) 22 years D) 32 years
 
Answer & Explanation Answer: A) 20 years

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1 235
Q:

Arjit's age is 3 years more than 1.5 times the age of Heera, whose age in turn is 10 years more than 2/3 the age of Deepika. If 5 times the age of Deepika is equal to 3 times the age of Arjit, what is the sum of the present ages of the trio?

 

A) 99 years B) 95 years
C) 100 years D) 97 years
 
Answer & Explanation Answer: C) 100 years

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0 247
Q:

Neetu is 10 years elder to Meetu, and Meetu is 7 years elder to Geetu. If the sum of their ages is 48 years, what is Neetu's age (in years)?

A) 22 B) 28
C) 25 D) 27
 
Answer & Explanation Answer: C) 25

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2 287
Q:

Jina is 24 years younger than her mother. Eight years hence her mother's age will be 5/3 times her age. What is Jina's present age (in years)?

A) 26 B) 24
C) 28 D) 22
 
Answer & Explanation Answer: C) 28

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0 255