Class 6 Faithfulness and 6 Kindness had the same number of children. The ratio of the number of girls in 6 Faithfulness to the number of girls in 6 Kindness was 1 : 13. The ratio of the number of boys in 6 Faithfulness to the number of boys in 6 Kindness was 4 : 1.
- What is the ratio of the number of boys to the number of girls in Class 6 Faithfulness?
- If there were 18 fewer boys than girls in Class 6 Kindness, how many children were there each class?
Class 6 Faithfulness |
Class 6 Kindness |
1x17 = 17 u |
1x17 = 17 u |
Girls |
Boys |
Girls |
Boys |
1 |
4x4 |
13 |
1x4 |
1 u |
16 u |
13 u |
4 u |
(a)
Class 6 Faithfulness
Boys : Girls
1 : 16
(b)
Number of fewer boys than girls in Class 6 Kindness
= 13 u - 4 u
= 9 u
9 u = 18
1 u = 18 ÷ 9 = 2
Number of children in each class
= 17 u
= 17 x 2
= 34
Answer(s): (a) 1 : 16; (b) 34