Class 6 Love and 6 Goodness had the same number of children. The ratio of the number of boys in 6 Love to the number of boys in 6 Goodness was 5 : 9. The ratio of the number of girls in 6 Love to the number of girls in 6 Goodness was 3 : 1.
- What is the ratio of the number of girls to the number of boys in Class 6 Love?
- If there were 21 fewer girls than boys in Class 6 Goodness, how many children were there each class?
Class 6 Love |
Class 6 Goodness |
1x11 = 11 u |
1x11 = 11 u |
Boys |
Girls |
Boys |
Girls |
5 |
3x2 |
9 |
1x2 |
5 u |
6 u |
9 u |
2 u |
(a)
Class 6 Love
Girls : Boys
5 : 6
(b)
Number of fewer girls than boys in Class 6 Goodness
= 9 u - 2 u
= 7 u
7 u = 21
1 u = 21 ÷ 7 = 3
Number of children in each class
= 11 u
= 11 x 3
= 33
Answer(s): (a) 5 : 6; (b) 33