the number of visits that would make their monthly cost equal is 5 visits
Step-by-step explanation:
Ann's Gym charges :
Amount per month = $20
let the number of mionths = x
let the number of visits = y
Additional fee per visit = $5
Total amount = 20 × x + 5 ×y
Total amount = 20x + 5y
Blake's gym charges:
Amount per month = $30
let the number of mionths = x
let the number of visits = y
Additional fee per visit = $3
Total amount = 30 × x + 3×y
Total amount = 30x + 3y
If the number of month = 1
And they make the same amount per month:
Ann's Gym charges = 20x + 5y = 20(1) + 5y = 20 + 5y
Blake's gym charges = 30x + 3y = 30(1) + 3y = 30 + 3y
Since the y make same amount, we equate both equations:
20 + 5y = 30 + 3y
collect like terms:
5y - 3y = 30 - 20
2y = 10
y = 10/2
y = 5
Hence, the number of visits that would make their monthly cost equal is 5 visits