explain how the values (how to calculate them) for Marginal Physical Product and Marginal Revenue Product?
First Column: Number of workers
Second Column: Total output
Third Column: Marginal Physical Product
Fourth Column: Marginal Revenue Product
0 0 --- ---
1 10 10 $80
2 25 15 $120
3 35 10 $80
4 43 8 $64
5 49 6 $48
6 52 3 $24
7 53 1 $8
8 50 -3 -$24