There were 132 children enrolled in the Wendy Cooking School in 2022.
311 of the children were girls. Additional children joined the cooking school in 2023. For every 3 girls who joined the cooking school, 2 boys joined the cooking school. If there was an equal number of boys and girls in 2023, how many boys joined the school in that year?
|
Girls |
Boys |
Before |
36 |
96 |
Change |
+ 3 u |
+ 2 u |
After |
36 + 3 u |
96 + 2 u |
Fraction of children who are boys
= 1 -
311 =
811 Number of girls at first
=
311 x 132
= 36
Number of boys at first
=
811 x 132
= 96
Girls who joined : Boys who joined
3 : 2
The number of boys and girls in the end is the same.
36 + 3 u = 96 + 2 u
3 u - 2 u = 96 - 36
1 u = 60
Number of boys who joined the school in that year
= 2 u
= 2 x 60
= 120
Answer(s): 120