There were 264 children enrolled in the Joelle Computer School in 2022. ³₁₁ of the children were girls. Additional children joined the computer school in 2023. For every 3 girls who joined the computer school, 2 boys joined the computer 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	72	192
Change	+ 3 u	+ 2 u
After	72 + 3 u	192 + 2 u

Fraction of children who are boys
= 1 - ³₁₁
= ⁸₁₁

Number of girls at first
= ³₁₁ x 264
= 72

Number of boys at first
= ⁸₁₁ x 264
= 192

Girls who joined : Boys who joined
3 : 2

The number of boys and girls in the end is the same.

72 + 3 u = 192 + 2 u
3 u - 2 u = 192 - 72

1 u = 120

Number of boys who joined the school in that year
= 2 u
= 2 x 120
= 240

Answer(s): 240