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

Click button first when a symbol is required. X

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