Class 3 Patience and 3 Gentleness had the same number of students. The ratio of the number of boys in 3 Patience to the number of boys in 3 Gentleness was 11 : 15. The ratio of the number of girls in 3 Patience to the number of girls in 3 Gentleness was 2 : 1.
- What is the ratio of the number of girls to the number of boys in Class 3 Patience?
- If there were 22 fewer girls than boys in Class 3 Gentleness, how many students were there each class?
Class 3 Patience |
Class 3 Gentleness |
1x19 = 19 u |
1x19 = 19 u |
Boys |
Girls |
Boys |
Girls |
11 |
2x4 |
15 |
1x4 |
11 u |
8 u |
15 u |
4 u |
(a)
Class 3 Patience
Girls : Boys
11 : 8
(b)
Number of fewer girls than boys in Class 3 Gentleness
= 15 u - 4 u
= 11 u
11 u = 22
1 u = 22 ÷ 11 = 2
Number of students in each class
= 19 u
= 19 x 2
= 38
Answer(s): (a) 11 : 8; (b) 38