Class 4 Faithfulness and 4 Peace had the same number of children. The ratio of the number of boys in 4 Faithfulness to the number of boys in 4 Peace was 5 : 11. The ratio of the number of girls in 4 Faithfulness to the number of girls in 4 Peace was 4 : 1.
- What is the ratio of the number of girls to the number of boys in Class 4 Faithfulness?
- If there were 36 fewer girls than boys in Class 4 Peace, how many children were there each class?
Class 4 Faithfulness |
Class 4 Peace |
1x13 = 13 u |
1x13 = 13 u |
Boys |
Girls |
Boys |
Girls |
5 |
4x2 |
11 |
1x2 |
5 u |
8 u |
11 u |
2 u |
(a)
Class 4 Faithfulness
Girls : Boys
5 : 8
(b)
Number of fewer girls than boys in Class 4 Peace
= 11 u - 2 u
= 9 u
9 u = 36
1 u = 36 ÷ 9 = 4
Number of children in each class
= 13 u
= 13 x 4
= 52
Answer(s): (a) 5 : 8; (b) 52