SOLUTION: Brandon is one year older than three times his brother’s age. The product
of their ages is 80. How old is Brandon’s brother?
Algebra.Com
Question 1044419: Brandon is one year older than three times his brother’s age. The product
of their ages is 80. How old is Brandon’s brother?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Brandon's age
Let = his brother's age
--------------------------
(1)
(2)
------------------
Substitute (1) into (2)
(2)
(2)
I'll use the quadratic formula
--------------
--------------
Brandon's brother is 5 yrs old
---------------------------
check:
(1)
(1)
(1)
and
(2)
(2)
(2)
OK
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