Class 4 Faithfulness and 4 Goodness had the same number of pupils. The ratio of the number of girls in 4 Faithfulness to the number of girls in 4 Goodness was 11 : 14. The ratio of the number of boys in 4 Faithfulness to the number of boys in 4 Goodness was 2 : 1.
- What is the ratio of the number of boys to the number of girls in Class 4 Faithfulness?
- If there were 22 fewer boys than girls in Class 4 Goodness, how many pupils were there each class?
Class 4 Faithfulness |
Class 4 Goodness |
1x17 = 17 u |
1x17 = 17 u |
Girls |
Boys |
Girls |
Boys |
11 |
2x3 |
14 |
1x3 |
11 u |
6 u |
14 u |
3 u |
(a)
Class 4 Faithfulness
Boys : Girls
11 : 6
(b)
Number of fewer boys than girls in Class 4 Goodness
= 14 u - 3 u
= 11 u
11 u = 22
1 u = 22 ÷ 11 = 2
Number of pupils in each class
= 17 u
= 17 x 2
= 34
Answer(s): (a) 11 : 6; (b) 34