NCHMCT JEE 2016 Question Paper with solutions for online practice

Question : 14 of 200

Marks: +1, -0

The ratio between the present ages of P and Q is 6 : 7. If Q is 4 years older than P, what will be the ratio of the ages of P and Q after 4 years?

3 : 4
3 : 5
4 : 3
None of these

Validate

Solution:

Let, present age of P = 6x years
and present age of Q = 7x years
According to the question,
7x – 6x = 4 ⇒ x = 4
Present age of P = 24 years
Present age of Q = 28 years
Ratio of P and Q after 4 years
=

{24+4}/{28+4}

{28}/{32}

= 7 : 8

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