There were 266 children enrolled in the Roshel Cooking School in 2016.
37 of the children were boys. Additional children joined the cooking school in 2017. For every 3 boys who joined the cooking school, 2 girls joined the cooking school. If there was an equal number of girls and boys in 2017, how many girls joined the school in that year?
|
Boys |
Girls |
Before |
114 |
152 |
Change |
+ 3 u |
+ 2 u |
After |
114 + 3 u |
152 + 2 u |
Fraction of children who are girls
= 1 -
37 =
47 Number of boys at first
=
37 x 266
= 114
Number of girls at first
=
47 x 266
= 152
Boys who joined : Girls who joined
3 : 2
The number of girls and boys in the end is the same.
114 + 3 u = 152 + 2 u
3 u - 2 u = 152 - 114
1 u = 38
Number of girls who joined the school in that year
= 2 u
= 2 x 38
= 76
Answer(s): 76