Find the volume of the rectangular prism:

Units cubed

x - 41.5 = 13.5

Step-by-step explanation:

Bernard typically runs x km/hour.

While he was sick, he only ran 41.5 km/hour.

If we consider that Bernard typically runs faster than what he ran while he was sick.

Then the equation that represents that the difference in his speed is 13.5 km/hour is  

x - 41.5 = 13.5 (1) (Answer)

Solving this equation we get x = 55 km/hour.

So, Barnard typically runs 55 km/hour.