Suppose that you drive a certain distance at 20 miles per hour, then turn around and drive back the same distance at 60 miles per hour. Choose at least four different distances and find the average speed for the whole trip. Then use inductive reasoning to make a conjecture as to what the average speed is in general. Remember distance = speed times time. (Hint: Only use decimals if it terminates. If you get a repeating decimal, keep it as a fraction.)