The speed limit of a highway is 55 miles per hour. A car is travelling at least 65 miles per hour. How many miles per hour m over the speed limit is the car travelling?
To find out how many miles per hour over the speed limit the car is travelling, you need to subtract the speed limit from the car's speed.
In this case, the speed limit is 55 miles per hour and the car is travelling at least 65 miles per hour.
So, to find how many miles per hour over the speed limit the car is travelling, subtract 55 from 65:
65 - 55 = 10
Therefore, the car is travelling 10 miles per hour over the speed limit.