The ratio between A and B’s present age is 4:5. If the ratio of their ages 5 years ago was 3:4, find the present age of B.

15 years

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20 years

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25 years

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35 years

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30 years

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Solution

The correct option is C
25 years

$\frac{A}{B} = \frac{4}{5}, \frac{A - 5}{B - 5} = \frac{3}{4} \Rightarrow B = 25 Y e a r s .$

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The ratio between A and B’s present age is 4:5. If the ratio of their ages 5 years ago was 3:4, find the present age of B.

The correct option is C 25 years AB=45,A−5B−5=34⇒B=25 Years.

The correct option is C
25 years

$\frac{A}{B} = \frac{4}{5}, \frac{A - 5}{B - 5} = \frac{3}{4} \Rightarrow B = 25 Y e a r s .$