Question

Maggie's brother is 8 years younger than four times her age. The sum of their ages is 67. How old is Maggie?

Answer 1

m + b = 67
b = 4m - 8

m + 4m - 8 = 67
5m - 8 = 67
5m = 67 + 8
5m = 75
m = 75/5
m = 15 <=== Maggie's age

b = 4m - 8
b = 4(15) - 8
b = 60 - 8
b = 52.....her brother is 52