# economics

posted by
**Peter**
.

3 . The production of housing has the following form:

H = number of housing units = 4(L + 10)1/2 + 80 (M + 3)3/4, where L is land and M is

materials. One unit of L costs 100 and 1 unit of M costs 12.

Find the cheapest ways to produce 1000 housing units, 2000 housing units, and 5000

housing units.