The age of a and b in ratio5:3 after 6 years their ratio will be 7:5 what is the present age of a
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Given that a and be age in ratio = 5 :3
Assume that 5x : 3x
After 6years the ages will be 7 :5
5x + 6 : 3x +6 = 7:5
we do cross multiply
5 ( 5x + 6) = 7 ( 3x +6)
25x + 30 = 21x + 42
25x - 21x = 42 -30
4x = 12
x = 12 / 4
x = 3
So, the present age of A is 5 *3 = 15 yrs
Assume that 5x : 3x
After 6years the ages will be 7 :5
5x + 6 : 3x +6 = 7:5
we do cross multiply
5 ( 5x + 6) = 7 ( 3x +6)
25x + 30 = 21x + 42
25x - 21x = 42 -30
4x = 12
x = 12 / 4
x = 3
So, the present age of A is 5 *3 = 15 yrs
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