Question 138

The present ages of A and B are in the ratio 5 : 6 respectively. After seven years this ratio becomes 6: 7. Then the present age of A in years is:

Solution

Let present age of A = $$5x$$ years and B = $$6x$$ years

According to ques,

=> $$\frac{5x+7}{6x+7}=\frac{6}{7}$$

=> $$35x+49=36x+42$$

=> $$36x-35x=49-42$$

=> $$x=7$$

$$\therefore$$ Present age of A = $$5\times7=35$$ years

=> Ans - (A)

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