Eric is driving a car in which the speedometer is calibrated in kilometers per hour (kph). He notes that his car is travelling at a rate of 75 kph, when he passes a speed limit sign stating the…

Eric is driving a car in which the speedometer is calibrated in kilometers per hour (kph). He notes that his car is travelling at a rate of 75 kph, when he passes a speed limit sign stating the limit is 40 miles per hour (mph). He knows that a kilometer is about 5/8 of a mile. If a police officer stops him at this point, how many mph over the limit will the ticket read?