9. The ages of Rahul and Haroon are in the ratio 5:7. Four years later the sum of their ages will be 56 years. What are their present ages?
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let the age of rahul of 5x
let the age of horoon be 7x
ATQ
(5x+4)+(7x+4) = 56
12x+8 = 56
12x = 56-8
12x = 48
x = 4
age of rahul = 5x
= 5×4
=20
age of hooron =7x
= 7x4 = 28
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