Answer:
23 students
Step-by-step explanation:
6 boys: 11 girls
x boys: 15 girls Add in the new equation
15/11 is about 1.36 Find the scale factor used
6 x 1.36 is about 8.18 Multiply the scale factor by the known amount of boys
Since we are adding students, there can't be part of a student.
6 boys: 11 girls
8 boys: 15 girls
There is a total of 23 students in the school play.