A developer has 7 1/2 acres of land to build houses on. If each house is to be built on 1/4-acre plot, how many houses can he build?

A. 3

B. 5

C. 30

D. 35

Amount of land that the developer has to build house on = 7 1/2 acres

= 15/2 acres

Amount of land required for building each house = 1/4 acre

Then

The total number of

houses that can be built by the developer = (15/2) / (1/4)

= (15 * 4) / (2 * 1)

= 15 * 2

= 30

So the developer can make a total of 30 house with the quantity of land he has. The correct option among all the options given in the question is option "C".