SOLUTION: Three times a brother age is the same as two times his sister'age.if the sister is 4 years elder to her brother,how old are the brother and the sister?

SOLUTION: Three times a brother age is the same as two times his sister'age.if the sister is 4 years elder to her brother,how old are the brother and the sister?

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Question 884946: Three times a brother age is the same as two times his sister'age.if the sister is 4 years elder to her brother,how old are the brother and the sister?
Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
3B = 2S
S = B+4
Substitute the value of S from the second equation into the first.
3B = 2S
3B = 2(B+4)
Distribute
3B = 2B + 8
Subtract 2B from each side
B = 8
If brother is 8, then sister is 8 + 4, or 12
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