Question

How do you set up the equations?

Answer 1

We will use d for drama and y for yearbook.

d + y = 64
d = y + 10

Now that we have the system if equations we can use substitution where you plug y+10 in for d in the first equation.

(y + 10) + y = 64

2y + 10 = 64

2y = 54

y = 27

If 27 of the 64 are in the yearbook club, 37 are in drama.