Class 6 Peace and 6 Patience had the same number of pupils. The ratio of the number of boys in 6 Peace to the number of boys in 6 Patience was 5 : 9. The ratio of the number of girls in 6 Peace to the number of girls in 6 Patience was 3 : 1.
- What is the ratio of the number of girls to the number of boys in Class 6 Peace?
- If there were 35 fewer girls than boys in Class 6 Patience, how many pupils were there each class?
Class 6 Peace |
Class 6 Patience |
1x11 = 11 u |
1x11 = 11 u |
Boys |
Girls |
Boys |
Girls |
5 |
3x2 |
9 |
1x2 |
5 u |
6 u |
9 u |
2 u |
(a)
Class 6 Peace
Girls : Boys
5 : 6
(b)
Number of fewer girls than boys in Class 6 Patience
= 9 u - 2 u
= 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Number of pupils in each class
= 11 u
= 11 x 5
= 55
Answer(s): (a) 5 : 6; (b) 55