Answer:
10 sessions
Explanation:
let s be the number of gym session
and let y be the cost
the cost can be represented as
y=ms+c
given data
Green's Gym
c=$50
m=$30
y=30s+50------------1
Breakout Gym
c=$250
m=$10
y=10s+250------------2
equating 1 and 2 we can find s, which is the number of session
30s+50=10s+250
30s-10s=250-50
20s=200
s=200/20
s=10
therefore the number of session is 10