Class 3 Gentleness and 3 Faithfulness had the same number of children. The ratio of the number of boys in 3 Gentleness to the number of boys in 3 Faithfulness was 5 : 8. The ratio of the number of girls in 3 Gentleness to the number of girls in 3 Faithfulness was 2 : 1.
- What is the ratio of the number of girls to the number of boys in Class 3 Gentleness?
- If there were 15 fewer girls than boys in Class 3 Faithfulness, how many children were there each class?
Class 3 Gentleness |
Class 3 Faithfulness |
1x11 = 11 u |
1x11 = 11 u |
Boys |
Girls |
Boys |
Girls |
5 |
2x3 |
8 |
1x3 |
5 u |
6 u |
8 u |
3 u |
(a)
Class 3 Gentleness
Girls : Boys
5 : 6
(b)
Number of fewer girls than boys in Class 3 Faithfulness
= 8 u - 3 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Number of children in each class
= 11 u
= 11 x 3
= 33
Answer(s): (a) 5 : 6; (b) 33