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Question

The ages of sonu and Monu are in the ratio 7 : 5. Ten years hence, the ratio of their ages will be 9 : 7. Find their present ages.

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Solution

It is given that the ratio of the ages of Sonu and Monu is 7:5.Let the present ages of Sonu and Monu be 7x and 5x years.After ten years:Age of Sonu = 7x + 10 years Age of Monu = 5x + 10 yearsAccording to the question,7x + 105x + 10 = 97or 49x + 70 = 45x + 90or 49x - 45x = 90 - 70or 4x = 20or x = 5 Present age of Sonu = 7 × 5 = 35 years. Present age of Monu = 5 × 5 = 25 years.

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