Aptitude - Questions & Answers

Ages - Online Quiz

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Following quiz provides Multiple Choice Questions (MCQs) related to Ages. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - The ages of Arzoo and Arnav are in the ratio of 11:13 respectively. After 7 years the ratio of their ages will be 20:23. What is the difference in years between their ages?

Answer : C

Explanation

Let the present ages of Arzoo and Arnav be 11x and 13x respectively.
According to the question,
(11x + 7) / (13x + 7) = 20/23
Or, 26x + 140 = 253x + 161
Or, 260x - 253x = 161 - 140
Or, 7x = 21
Or, x =  3

Difference between  their ages = 13x - 11x
= 2x
= 2*3
=  6 years

Q 2 - The ratio of the present ages of Sunita and Vinita is 4:5. Six years hence the ratio of their ages will be 14:17. What will be the ratio of their ages 12 years hence?

Answer : A

Explanation

Suppose the present ages of Sunita and Vinita be 4x years and 5x years respectively.

Six years hence
(4x + 6)/(5x + 6) = 14/17
Or, 68x + 102 = 70x + 84
Or, 2x = 18
Or, X = 9
Ratio of ages of Sunita and Vinita after 12 years = (4x + 12) : (5x + 12)
= (36+12) : (45+12)
= 48:57
= 16:19

Q 3 - Six years back Seema was half of that of Rupa in age. Four years hence the respective ratio of their ages would be 3:5. How old is Rupa at present?

Answer : D

Explanation

Let the present ages of Seema and Rupa be x years and y years respectively.
According to question,
(y - 6) = 2(x - 6)
Or, y - 6 = 2x - 12
Or, 2x - y = 6   ...(i)
Similarly,
(x + 4)/(y + 4) = 3/5
Or, 5x + 20 = 3y + 12
Or, 5x - 3y = - 8       ... (ii)
From equ (i) and equ (ii),
6x - 3y = 18
5x - 3y = -8
We get, x = 26 years and y = 46 years

Q 4 - Prabhakar is 15 years older than Navin and Navin is 25 years younger than Ashok. Which of the following represents the difference between the ages of Ashok and Prabhakar?

Answer : D

Explanation

According to question,
P = N + 15
A = N + 25

A - P = (N + 25) - (N + 15) = 10 years

Q 5 - If 100 year is equal to the sum of the ages of father and son. 2:1 was the ratio of father and son before the period of 5 years . Find out the ratio of ages which would be after the period 10 year.

Answer : B

Explanation

If x is the father  age ,then son age will be (100-x)
x-5/ (100-x)-5 =2/1 ⇒ (x-5)= 2(95-x)  ⇒ x =-5= 190 -2x ⇒ 3x =195 ⇒ x =65
father age = 65 yrs. And son age = 100-65 = 35 year
required ratio = (65+10) / (35+10) =75/45 = 5:3

Q 6 - If the age of a mother is 3 times in the comparison of her daughter before the period of 10 year . 10 year later from the present date , the mother age would be 2 times of her daughter. In that situation what should be the age ratio of them at the present time?

Answer : C

Explanation

If the x year is the present age of her daughter.
Mother age 10 year ago = 3(x-10) = (3x-30) year
Present age of the mother = ( 3x-30+10) = (3x-20) year
After 10 year age of the mother = (3x-20 +10) = (3x-10) year
Son age after the period of 10 year = (x+10) year
∴  (3x-10) = 2(x+10) ⇒ x = 30
Mother present age = (3x-20) year = 70 years.
Daughter present age = 30 years.
Required ratio =  70: 30 = 7:3

Q 7 - The product of Ram age 5 year ago with his age 7 years later is 28 . What should be the present age of mr. Ram ?

Answer : C

Explanation

If present age of ram is x years. then
(x-5)*(x+7) = 28 ⇒ x² +2x-35 = 28 ⇒ x²+2x-63 =0
⇒ (x+9) (x-7) = 0 ⇒ x =7
∴ 7 years is the present age of  ram.

Q 8 - Before the period of 5 year, the age of vijay was 1/3 of the age in the comparison from vipin. The present age of vijay is 17 year , in that situation find out the present age of vipin?

Answer : C

Explanation

Let vijay age 5 years  ago be x years. Then, vipin age 5 years ago = 3x years.
x+5 = 17  ⇒ x = 12
present age of vipin = (3*12+5) = 41 yrs.

Q 9 - Before the period of 16 year, my grandfather was 8 times older in the comparison of me. He would be 3 times of my age 8 years now. Find out the ratio of my grandfather and my age before the period of 8 year.

Answer : D

Explanation

Let my age 16 yrs ago be x years.
My grandfather age at that time = 8x years
My present  age = (x+16) yrs.
My grandfather present age = (8x+16) years.
3(x+16+8)= (8x+16+8) ⇒ 3x+72 = 8x+24  ⇒ 5x = 48 ⇒ x = 48/5
Ratio of our  ages  8 yrs ago =  (x+16-8) /(8x+16-8) = x+8/ 8x+8
 (48/5+8)/ (8* 48/5 +5) = 88/424 = 11 :53.

Q 10 - Ajit age after 15 years will be 5 times his age 5 years back . what is the present age of ajit ?

Answer : B

Explanation

Let the present age of ajit be x years.
(x+15) = 5(x-5) ⇒ x+15 = 5x-25 ⇒ 4x= 40 =. X = 10

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