Story problem I need help with in algebra

Question

Kyle has $200 to spend on a camera and a camera case. If he wants to spend three times as much on his camera as on the case, what is the most he should spend on the camera case?

Answer 1

Let x = amount spent on the case

Let 3x = the amount spent on the camera

x + 3x = 200

4x = 200

x = $50

3x = $150