Class 4 Patience and 4 Gentleness had the same number of children. The ratio of the number of boys in 4 Patience to the number of boys in 4 Gentleness was 7 : 13. The ratio of the number of girls in 4 Patience to the number of girls in 4 Gentleness was 3 : 1.
- What is the ratio of the number of girls to the number of boys in Class 4 Patience?
- If there were 30 fewer girls than boys in Class 4 Gentleness, how many children were there each class?
Class 4 Patience |
Class 4 Gentleness |
1x16 = 16 u |
1x16 = 16 u |
Boys |
Girls |
Boys |
Girls |
7 |
3x3 |
13 |
1x3 |
7 u |
9 u |
13 u |
3 u |
(a)
Class 4 Patience
Girls : Boys
7 : 9
(b)
Number of fewer girls than boys in Class 4 Gentleness
= 13 u - 3 u
= 10 u
10 u = 30
1 u = 30 ÷ 10 = 3
Number of children in each class
= 16 u
= 16 x 3
= 48
Answer(s): (a) 7 : 9; (b) 48