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Three years earlier father was 7 times as old as his son.three years hence the father age would be four times that of his son. what are the present age of father and son?
Wiki User
∙ 14y ago
f - 3 = 7(s -3) ie f - 3 = 7s - 21 so f = 7s - 18;
f + 3 = 4(s + 3) ie f + 3 = 4s + 12 so f = 4s + 9.
ie 7s - 18 = 4s + 9 so 3s = 27, making s = 9
Now f = 45, s = 9; In 3 years f = 48, s = 12 and 3 years ago f = 42, s = 6.
Wiki User
∙ 14y ago
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