Question
There were 3 times as many girls as boys in the gymnasium at first. After 5 girls left and 4 boys entered the gymnasium, there were 11 more girls than boys remaining in the gymnasium. What was the number of girls in the gymnasium at first?
4 m

Click button first when a symbol is required. X

There were 3 times as many girls as boys in the gymnasium at first. After 5 girls left and 4 boys entered the gymnasium, there were 11 more girls than boys remaining in the gymnasium. What was the number of girls in the gymnasium at first?