Sainik School Entrance Exam 2018 Solved Paper

Question : 4 of 150

Marks: +1, -0

The age of A and B are in the ratio

5: 7

. Four years from now the ratio of their ages will be

3: 4

. Then the present age of B is :

Solution:

(b) Suppose that present age of

\A

5 x

and present age of

\B

7x

According to the question,
After 4 years,

{15 x+4}/{7 x+4}= {3}/{4}

⇒ 21 x+12=20 x+16

⇒

x=4

Hence present age of

\B=7×4=28

years.

Go to Question:

Prev Question

Next Question