SOLUTION: A boy is 4 years old and his sister is three times as old as he is. When the boy is 12 years old, how old will his sister be?
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Question 172270
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A boy is 4 years old and his sister is three times as old as he is. When the boy is 12 years old, how old will his sister be?
Answer by
Edwin McCravy(20056)
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A boy is 4 years old and his sister is three times as old as he is.
So he's 4 and she's 12. So she is 8 years older than he is.
When the boy is 12 years old, how old will his sister be?
She will be 8 years older or 20. Edwin