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Problems on Age MCQs

Q1 :

Five years hence, father’s age will be 3 times the age of his son. Five years ago, father was seven times as old as his son. The age of the son at present is

A
  

10 yrs

B
  

15 yrs

C
  

20 yrs

D
  

40 yrs

View Answer
Correct Answer: A

10 yrs

Description:

 Let xx denotes the age of the father and  yy is the age of the son.

Then by question

(x+5)=(y+5)×3…(I)(x + 5) = (y + 5) times 3 ;;;;; ldots text{(I)}

Also (x−5)=7(y−5)×3…(II)text{Also }(x - 5) = 7(y - 5) times 3 ;;;;; ldots text{(II)}

Solving these equation , we get

x=40x = 40 years and  y=10y = 10 years

Q2 :

Prakash is 34 years older than Lukesh Before 10 years the total of their age was 48 years. What is the present age of Prakash?

A
  

17 years

B
  

34 years

C
  

51 years

D
  

None of the above

View Answer
Correct Answer: C

51 years

Description:

Let Lokesh's age = xx
Prakash's age = yy

Given, x+34=y and (x−10)+(y−10)=48 x+y−20=48begin{aligned} text{Given, } ;; x + 34 = y text{and } (x-10) + (y-10) = 48 x + y - 20 = 48 end{aligned}

Putting the value of yy

x+x+34−20=482x=34⇒x=17begin{aligned} x + x + 34 - 20 = 48 2x = 34 Rightarrow ;; x = 17 end{aligned}

⇒Rightarrow  Prakash present age =y=x+34= y=x+34
=17+34=17+34
=51=51 years

Q3 :

If ages are noted in completed year, then a child's age who is 4 years 10 months, will be noted as—

A
  

4 years

B
  

5 years

C
  

4-10 years

D
  

4-5 years

View Answer
Correct Answer: D

4-5 years

Description:

Since 4 years 10 months =41012= 4 frac{10}{12}
=4+.83=4.83=4 + .83 = 4.83

≈approx(4-5) years (approx.)