Class 2 Goodness and 2 Patience had the same number of students. The ratio of the number of boys in 2 Goodness to the number of boys in 2 Patience was 5 : 9. The ratio of the number of girls in 2 Goodness to the number of girls in 2 Patience was 3 : 1.
- What is the ratio of the number of girls to the number of boys in Class 2 Goodness?
- If there were 35 fewer girls than boys in Class 2 Patience, how many students were there each class?
Class 2 Goodness |
Class 2 Patience |
1x11 = 11 u |
1x11 = 11 u |
Boys |
Girls |
Boys |
Girls |
5 |
3x2 |
9 |
1x2 |
5 u |
6 u |
9 u |
2 u |
(a)
Class 2 Goodness
Girls : Boys
5 : 6
(b)
Number of fewer girls than boys in Class 2 Patience
= 9 u - 2 u
= 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Number of students in each class
= 11 u
= 11 x 5
= 55
Answer(s): (a) 5 : 6; (b) 55