There were 132 adults enrolled in the Jade Dancing School in 2018. ⁴₁₁ of the adults were women. Additional adults joined the dancing school in 2019. For every 4 women who joined the dancing school, 3 men joined the dancing school. If there was an equal number of men and women in 2019, how many men joined the school in that year?

	Women	Men
Before	48	84
Change	+ 4 u	+ 3 u
After	48 + 4 u	84 + 3 u

Fraction of adults who are men
= 1 - ⁴₁₁
= ⁷₁₁

Number of women at first
= ⁴₁₁ x 132
= 48

Number of men at first
= ⁷₁₁ x 132
= 84

Women who joined : Men who joined
4 : 3

The number of men and women in the end is the same.

48 + 4 u = 84 + 3 u
4 u - 3 u = 84 - 48

1 u = 36

Number of men who joined the school in that year
= 3 u
= 3 x 36
= 108

Answer(s): 108