Question
A number of girls form a singing group. All but 3 of the girls are blondes, all but 4 are brunettes, and all but 5 are redheads. How many girls are in the group?
Answers
helper
x = total girls in group
x - 3 = blonds
x - 4 = brunettes
x - 5 = redheads
(x - 3) + (x - 4) + (x - 5) = x
3x - 12 = x
2x = 12
x = 6
1 redhead
2 brunettes
3 blond
x - 3 = blonds
x - 4 = brunettes
x - 5 = redheads
(x - 3) + (x - 4) + (x - 5) = x
3x - 12 = x
2x = 12
x = 6
1 redhead
2 brunettes
3 blond