Class 5 Love and 5 Goodness had the same number of students. The ratio of the number of girls in 5 Love to the number of girls in 5 Goodness was 11 : 15. The ratio of the number of boys in 5 Love to the number of boys in 5 Goodness was 2 : 1.
- What is the ratio of the number of boys to the number of girls in Class 5 Love?
- If there were 33 fewer boys than girls in Class 5 Goodness, how many students were there each class?
Class 5 Love |
Class 5 Goodness |
1x19 = 19 u |
1x19 = 19 u |
Girls |
Boys |
Girls |
Boys |
11 |
2x4 |
15 |
1x4 |
11 u |
8 u |
15 u |
4 u |
(a)
Class 5 Love
Boys : Girls
11 : 8
(b)
Number of fewer boys than girls in Class 5 Goodness
= 15 u - 4 u
= 11 u
11 u = 33
1 u = 33 ÷ 11 = 3
Number of students in each class
= 19 u
= 19 x 3
= 57
Answer(s): (a) 11 : 8; (b) 57