As part of the 'Learning Journey' program, 73 pupils travelled on two buses, one air-conditioned and one non-air-conditioned, to the Singapore Discovery Centre. Three-fifths of the pupils on the air-conditioned has wee girls. There were 17 boys in the non-at, conditioned bus. The number of girls on the two buses were equal. How many pupils wee there on the air-conditioned bus?

Answer 1

"The number of girls on the two buses were equal"
let the number of girls on each bus be x

So the number of students on the nonAC bus = x+17
and the number of students on the AC bus = 73-x-17 = 56-x

(3/5)(56-x) = x
168 - 3x = 5x
8x=168
x = 21

so on the AC bus we had 56-x = 56-21 = 35
of which 21 were girls and 14 were boys

on the nonAC bus we has 21 girls and 17 boys

check:
total = 21+14+21+17 = 73
is (3/5)(35) = 21 ? YES!
All is good!

btw, what are wee girls?
Always check for typing errors before posting