Question 17

Ages of a brother and sister are in the ratio 4 : 3. After 3 years, the sister will be twice as old as she is now. How old is the brother now?

Solution

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Let say, Brother's age is 4k and Sister's age is 3k.

According to question,

$$6k=3k+3$$

or, $$k=1.$$

So, Brother is 4 year old.

A is correct choice.

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