Class 1 Peace and 1 Love had the same number of students. The ratio of the number of boys in 1 Peace to the number of boys in 1 Love was 5 : 13. The ratio of the number of girls in 1 Peace to the number of girls in 1 Love was 3 : 1.
- What is the ratio of the number of girls to the number of boys in Class 1 Peace?
- If there were 27 fewer girls than boys in Class 1 Love, how many students were there each class?
Class 1 Peace |
Class 1 Love |
1x17 = 17 u |
1x17 = 17 u |
Boys |
Girls |
Boys |
Girls |
5 |
3x4 |
13 |
1x4 |
5 u |
12 u |
13 u |
4 u |
(a)
Class 1 Peace
Girls : Boys
5 : 12
(b)
Number of fewer girls than boys in Class 1 Love
= 13 u - 4 u
= 9 u
9 u = 27
1 u = 27 ÷ 9 = 3
Number of students in each class
= 17 u
= 17 x 3
= 51
Answer(s): (a) 5 : 12; (b) 51