1.

Five years ago,the ratio between the age of P and Q is 7 : 9 and the present age ratio is 4 : 5. Find the present age of Q.1. 40 years2. 50 years3. 30 years4. 25 years

Answer» Correct Answer - Option 2 : 50 years

Given

Ratio of present age of P and Q is 4 : 5

Calculation

Let the present age of P and Q is 4x and 5x

According to question

(4x - 5)/(5x - 5) = 7/9

9(4x - 5) = 7(5x - 5)

36x - 45 = 35x - 35

x = - 35 + 45

x = 10

Present age of Q is 50 years[i.e. 5(10)]



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