Class 6 Kindness and 6 Peace had the same number of children. The ratio of the number of boys in 6 Kindness to the number of boys in 6 Peace was 1 : 7. The ratio of the number of girls in 6 Kindness to the number of girls in 6 Peace was 4 : 1.
- What is the ratio of the number of girls to the number of boys in Class 6 Kindness?
- If there were 30 fewer girls than boys in Class 6 Peace, how many children were there each class?
Class 6 Kindness |
Class 6 Peace |
1x9 = 9 u |
1x9 = 9 u |
Boys |
Girls |
Boys |
Girls |
1 |
4x2 |
7 |
1x2 |
1 u |
8 u |
7 u |
2 u |
(a)
Class 6 Kindness
Girls : Boys
1 : 8
(b)
Number of fewer girls than boys in Class 6 Peace
= 7 u - 2 u
= 5 u
5 u = 30
1 u = 30 ÷ 5 = 6
Number of children in each class
= 9 u
= 9 x 6
= 54
Answer(s): (a) 1 : 8; (b) 54