Maggie's brother is 7 years younger than three times her age. The sum of their ages is 45. How old is Maggie

Answer 1

Let M = Maggie's age

B = Brother's age

Then

M + B = 45

B = 3M - 7 Then M + 3M - 7 = 45

4M = 52

M = 13 and B = 3(13) - 7 = 32

Maggie = 13 years old

& Brother = 32 years old