Class 4 Love and 4 Peace had the same number of pupils. The ratio of the number of girls in 4 Love to the number of girls in 4 Peace was 3 : 5. The ratio of the number of boys in 4 Love to the number of boys in 4 Peace was 2 : 1.
- What is the ratio of the number of boys to the number of girls in Class 4 Love?
- If there were 24 fewer boys than girls in Class 4 Peace, how many pupils were there each class?
Class 4 Love |
Class 4 Peace |
1x7 = 7 u |
1x7 = 7 u |
Girls |
Boys |
Girls |
Boys |
3 |
2x2 |
5 |
1x2 |
3 u |
4 u |
5 u |
2 u |
(a)
Class 4 Love
Boys : Girls
3 : 4
(b)
Number of fewer boys than girls in Class 4 Peace
= 5 u - 2 u
= 3 u
3 u = 24
1 u = 24 ÷ 3 = 8
Number of pupils in each class
= 7 u
= 7 x 8
= 56
Answer(s): (a) 3 : 4; (b) 56