Question 61
Ages of P and Q are 50 and 40 respectively. How long ago was the ratio of their ages 3 : 2?
Solution
Let say , x years ago their age ratio was 3:2.
So,
$$\frac{50-x}{40-x}=\frac{3}{2}.$$
or,$$100-2x=120-3x.$$
or,$$3x-2x=120-100.$$
or,x=20.
D is correct choice.
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