The ratio of the present age of father to that of son is 7:2. After 10 years their ages will be in the ratio of 9:4. The present age of the father is:
Question and options
The ratio of the present age of father to that of son is 7:2. After 10 years their ages will be in the ratio of 9:4. The present age of the father is:
- 35 years
- 40 years
- 30 years
- 25 years
Answer and explanation
Correct answer: A - 35 years
Let the ages be and . gives , so . The father is 35 (son 10; after 10 years 45:20 = 9:4).
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CUSAT CAT Five-Year LL.B.
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