There were 253 adults enrolled in the Cathy Computer School in 2016. ⁴₁₁ of the adults were men. Additional adults joined the computer school in 2017. For every 4 men who joined the computer school, 3 women joined the computer school. If there was an equal number of women and men in 2017, how many women joined the school in that year?

	Men	Women
Before	92	161
Change	+ 4 u	+ 3 u
After	92 + 4 u	161 + 3 u

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

Number of men at first
= ⁴₁₁ x 253
= 92

Number of women at first
= ⁷₁₁ x 253
= 161

Men who joined : Women who joined
4 : 3

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

92 + 4 u = 161 + 3 u
4 u - 3 u = 161 - 92

1 u = 69

Number of women who joined the school in that year
= 3 u
= 3 x 69
= 207

Answer(s): 207