SOLUTION: If Joel spends 2 hours working math problems, he can complete 20 problems. If he spends 3 hours, he can complete 26 problems. What is the marginal product of the 3rd hour?

Question 913109: If Joel spends 2 hours working math problems, he can complete 20 problems. If he spends 3 hours, he can complete 26 problems. What is the marginal product of the 3rd hour?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
2*10=20
3*9=27 but he only did 26
Seems to be getting tired.
4*8=32 so will probably only do 30 which is only about 4 problems in the last hour
He should take a long rest and come back he is getting nothing done in the last hour
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