Allocation 1

Abi grows millet on two fields in Nigeria, his home country. He can work for at most 3000 hours on both fields. The North Field is more fertile. Figure DD shows the hours he will work on his North Field on the horizontal axis, from left to right. whatever is left over he will work on the South Field. MP1 is marginal productivity on the North Field, and MP2 on the south field.

The "optimal" number of hours to work on the North Field would be

all 3000 hours
H1
H2
H3
none at all