Leo is 12 years old, and his cousin Polly is three times his age. How old will Polly be when Leo is twice as old as he is now?
A 24 B 36 C 48 D 60 E 72
C
Leo is 12 years old, his cousin, Polly, is three times his age. That is, Polly is 36 years old. It is tempting now to simply double Polly’s age because Leo’s age has been doubled. But Leo’s age has increased by 12 years and so Polly’s must do so as well. That is Polly will be 36 + 12 = 48 years old, answer C.
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