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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 |
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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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