Class 4 Faithfulness and 4 Gentleness had the same number of children. The ratio of the number of girls in 4 Faithfulness to the number of girls in 4 Gentleness was 7 : 11. The ratio of the number of boys in 4 Faithfulness to the number of boys in 4 Gentleness was 2 : 1.
- What is the ratio of the number of boys to the number of girls in Class 4 Faithfulness?
- If there were 14 fewer boys than girls in Class 4 Gentleness, how many children were there each class?
Class 4 Faithfulness |
Class 4 Gentleness |
1x15 = 15 u |
1x15 = 15 u |
Girls |
Boys |
Girls |
Boys |
7 |
2x4 |
11 |
1x4 |
7 u |
8 u |
11 u |
4 u |
(a)
Class 4 Faithfulness
Boys : Girls
7 : 8
(b)
Number of fewer boys than girls in Class 4 Gentleness
= 11 u - 4 u
= 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Number of children in each class
= 15 u
= 15 x 2
= 30
Answer(s): (a) 7 : 8; (b) 30