SOLUTION: Samantha is 4 years older than her brother. The sum of their ages is 20. The product of their ages is 96. How old is Samantha's brother?

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Question 857134: Samantha is 4 years older than her brother. The sum of their ages is 20. The product of their ages is 96. How old is Samantha's brother?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
S = B+4
S + B = 20
S * B = 96
Substitute the known value of S in the first equation into the second.
(B+4) + B = 20
Add
2B + 4 = 20
Subtract 4 from each side
2B = 16
Divide each side by 2
B = 8
If B is 8, then S is 8+4, or 12.
8*12=96
Success!