Answer:
10 hour because you will need to find the time the line intercect(meaning cross each other) and it was at 10 hour for 140 dollar
Explanation:
10 hours at $140
Well, uhh...
"same amount of money" means the same value on the y axis
looking at the graph one can see they intercept at point (10,140)
so if they both work 10 hours, their total individual money will be $140
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