Answer:
Spencer and Nolan each earned 133$ by working for 29 minutes
Explanation:
After 10 minutes: Spencer, 76$, Nolan 114$
After 20 minutes: Spencer, 106$, Nolan, 124$
After 30 minutes: Spencer, 136$, Nolan, 134$
Go back 1 minute to 29 minutes and Spencer, 133$, Nolan, 133$