Question 44

Adam who is 20 years old is 4 times as old as Mary. What will be Mary’s age when Adam is twice as old as her ?

Solution

Adam's age = 20 years

=> Mary's age = $$\frac{20}{4}=5$$ years

Since, difference between their ages = $$20-5=15$$ years

$$\therefore$$ Mary's age will be $$15$$ years when Adam is twice as old as her. (i.e. after 10 years)

=> Ans - (D)

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