SOLUTION: A boy is 3 times as old as a girl. If their total age is 48years, how old is the girl
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Question 1014536: A boy is 3 times as old as a girl. If their total age is 48years, how old is the girl
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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G=girl's age; B=boy's age=3G
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G+B=48 years . Substitute for B.
G+3G=48 years
4G=48 years
G=12 years
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ANSWER : The girl is 12 years old.
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CHECK:
B=3G=3(12)=36 years
The boy is 36 years old.
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G+B=48 years
12 years + 36 years = 48 years
48 years = 48 years
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