Problema Solution
Two times Ashley's age plus three times Brents age is 47. Ashley is also one less than two times Brents age. How old is Brent?
Answer provided by our tutors
let
a = Ashley's age
b = Brent's age
Two times Ashley's age plus three times Brents age is 47
2a + 3b = 47
Ashley has also one less than two times Brents age
a = 2b - 1
plug a = 2b - 1 into 2a + 3b = 47
2(2b - 1) + 3b = 47
by solving we find
b = 7 years
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Brant is 7 years old.