Question

Jeremy watched a high speed car chase in Germany, and overheard that the car travelled 85.0 km in 20.5 minutes, what was the average mph of that car??

Answer 1

The correct answer is - 154.2 miles per hour.

Step-by-step explanation:

The velocity of an object can be calculated by dividing the distance covered by the object in a unit of time. In the given question we know that car covers 85 kilometers of distance in 20.5 minutes.

We know: 1 km = 0.621371 miles

then, 85 km = 0.621371 × 85

= 52.81 miles

Then velocity will be:

= 52.81/20.5

= 2.57 miles/minute

converting miles/minute to miles/hour

= 2.57 × 60

= 154.2