math
posted by Starla on .
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?

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