Theage of sonu monu are inthe ratio of 7:5 .ten years hence the ratio of there age will be 9:7 find there present age
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let the ages of Sonu and monu be 7x and 5x respectively and after ten yrs there ages will be 9x and 7x respectively
according to question
(7x+10)/(5x+10) = 9x/7x
(7x+10)/(5x+10) = 9/7
7(7x+10) = 9(5x+10)
49x+70 = 45x +90
4x = 20 => x = 20/4 = 5 yrs
sonu's age = 7x = 7×5 = 35 yrs
monu's age = 5x = 5×5 = 25yrs
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