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| 1. |
A father is now three times as old as his son. Five years back, he was four times as old as his son. The age of the son (in years) is |
| Answer» Let son's age be x years. Then, father's age = (3x) years. Five years ago, father's age = (3x - 5) years and son's age = (x - 5) years. So, 3x - 5 = 4 (x - 5) 3x - 5 = 4x - 20 x = 15. | |