Class 5 Patience and 5 Love had the same number of children. The ratio of the number of girls in 5 Patience to the number of girls in 5 Love was 1 : 7. The ratio of the number of boys in 5 Patience to the number of boys in 5 Love was 4 : 1.
- What is the ratio of the number of boys to the number of girls in Class 5 Patience?
- If there were 25 fewer boys than girls in Class 5 Love, how many children were there each class?
Class 5 Patience |
Class 5 Love |
1x9 = 9 u |
1x9 = 9 u |
Girls |
Boys |
Girls |
Boys |
1 |
4x2 |
7 |
1x2 |
1 u |
8 u |
7 u |
2 u |
(a)
Class 5 Patience
Boys : Girls
1 : 8
(b)
Number of fewer boys than girls in Class 5 Love
= 7 u - 2 u
= 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Number of children in each class
= 9 u
= 9 x 5
= 45
Answer(s): (a) 1 : 8; (b) 45