The ratio of boys to girls at the dance was 3:4. There were 60 girls at the dance. The teachers were 20% of the number of boys. How many people were at the dance?
60 girls represent 4 parts, so one part of students is 60 / 4 = <<60/4=15>>15 students.
There are 15 * 3 = <<15*3=45>>45 boys at the dance.
The teachers at the dance are 45 * 0,2 = 9 teachers at the dance.
There are 60 + 45 + 9 = <<60+45+9=114>>114 people at the dance.
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