In Exercises 67 through 72, write a program to solve the problem and display the answer...

In Exercises 67 through 72, write a program to solve the problem and display the answer in a list box. The program should use variables for each of the quantities.

Average Speed If a car left Washington, D.C., at 2 o’clock and arrived in New York at 7 o’clock, what was its average speed? Note: New York is 233 miles from Washington. See Fig. 3.3.