Math, asked by manya29, 1 year ago

the ages of a and b are in the ratio 5:7 . four years from now the ratio of their ages will be 3:4. the present age of b is

Answers

Answered by sonu579

3

Let their ages be 5x and 7x resp
4yrs from now
5x+4/7x+4=3/4
Cross multiply
U get x=4
Present age of b=7×4=28yrs

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