Class 1 Gentleness and 1 Goodness had the same number of children. The ratio of the number of girls in 1 Gentleness to the number of girls in 1 Goodness was 5 : 8. The ratio of the number of boys in 1 Gentleness to the number of boys in 1 Goodness was 2 : 1.
- What is the ratio of the number of boys to the number of girls in Class 1 Gentleness?
- If there were 10 fewer boys than girls in Class 1 Goodness, how many children were there each class?
Class 1 Gentleness |
Class 1 Goodness |
1x11 = 11 u |
1x11 = 11 u |
Girls |
Boys |
Girls |
Boys |
5 |
2x3 |
8 |
1x3 |
5 u |
6 u |
8 u |
3 u |
(a)
Class 1 Gentleness
Boys : Girls
5 : 6
(b)
Number of fewer boys than girls in Class 1 Goodness
= 8 u - 3 u
= 5 u
5 u = 10
1 u = 10 ÷ 5 = 2
Number of children in each class
= 11 u
= 11 x 2
= 22
Answer(s): (a) 5 : 6; (b) 22