Class 6 Love and 6 Patience had the same number of children. The ratio of the number of boys in 6 Love to the number of boys in 6 Patience was 1 : 9. The ratio of the number of girls in 6 Love to the number of girls in 6 Patience was 3 : 1.
- What is the ratio of the number of girls to the number of boys in Class 6 Love?
- If there were 20 fewer girls than boys in Class 6 Patience, how many children were there each class?
Class 6 Love |
Class 6 Patience |
1x13 = 13 u |
1x13 = 13 u |
Boys |
Girls |
Boys |
Girls |
1 |
3x4 |
9 |
1x4 |
1 u |
12 u |
9 u |
4 u |
(a)
Class 6 Love
Girls : Boys
1 : 12
(b)
Number of fewer girls than boys in Class 6 Patience
= 9 u - 4 u
= 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
Number of children in each class
= 13 u
= 13 x 4
= 52
Answer(s): (a) 1 : 12; (b) 52