Question

The present ages of A and B are in the ratio 7:5 . Ten years later, their ages will be in ratio 9:7 . Find their present ages.


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Answer 1

Answer:

Let the present age of A= 7x years

The present age of B= 5x years

After 10 years, their ages will be

A=7x+10 years and

B=5x+10 years

The ratio of their ages after 10 years is 9:7.

∴

5x+10

7x+10

=

7

9

⇒49x+70=45x+90

⇒49x−45x=90−70

⇒4x=20

⇒x=5

Step-by-step explanation:

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