Adeveloper 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".