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The ages of x and y are in the ratio 3:7 after 7 years tyheir ages will be in the ratio 11:21. find their present ages.

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by mentaal1

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by mentaal1

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According to the question

3x+7/ 7x+7= 11/21

⇒21(3x+7)= 11(7x + 7)

⇒63x+147= 77x+77

⇒63x-77x= 77-147

⇒-14x= -70

⇒x=70/14

Thus,x=5

Hence, present age of x = 3x= 3*5=15

and present age of y= 7x= 7*5= 35