Question

Gopal is 5year older than mangal .After 5year the ratio of their ages will be 5:4 ,find their present ages

Answer 1

Let mangal's age be x.
Gopal's age = 5 +x
now, after five years mangals age = x + 5
gopals age = (5+x) + 5
so,
(5+x) +5. 5
----------- = ----------
x+5. 4
4(25+5x) = 5(x+5)
100 + 4x = 5x + 25
4x - 5x = 25 - 100
-x. = -75
x. = 75
mangal's age = 75 years
gopal's age. = 75 + 5 = 80 years.
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