Question

The metro bus can complete its entire route four times per hour . at this rate how long would it take the bus to complete the route 15 times
A.2.75
B.3.50
C.3.50
D. 4 hours

Answer 1

The answer is C, then. 

$\frac{4}{1} = \frac{15}{x}$

4 * 3.75 = 15.

1 * 3.75 = 3.75.

C or 3.75 is the answer.

Answer 2

15 divided by 4 routes completed per hour is 3.75 hours for the bus to complete the 15 routes.