Solve
-The Speed of a Vehicle Is Inversely Proportional to the Time

Multiple Choice

Solve.
-The speed of a vehicle is inversely proportional to the time it takes to travel a fixed distance. If a vehicle travels a fixed distance at 60 miles per hour in 20 minutes, how fast must it travel to cover the same distance in 30 Minutes?

A) 40 miles per hour
B) 10 miles per hour
C) 90 miles per hour
D) $\frac{1}{90} \text { miles per hour }$