A salesperson leaves his home every Monday and returns every Friday. He travels by compa...

A salesperson leaves his home every Monday and returns every Friday. He travels by company car. Each day on the road, the salesperson records the amount of gasoline put in the car. Given the starting odometer reading (that is, the odometer reading before he leaves on Monday) and the ending odometer reading (the odometer reading after he returns home on Friday), design an algorithm to find the average miles per gallon. Sample data is as follows: