Your friend is a budding entenpreneur and wants to start a lawn mowing business.
She has heard that you are taking Computer Science and comes to you and asks you
to write a program that will provide an estimate to her customers on the cost 
to mow their lawn. Knowing that you are just beginning, she says that all the 
yards are rectangular and all the houses are rectangular. She wants to charge 
55 cents per square metre of lawn to mow the lawn.  Write an algorithm that will
ask for the customer's name, the length and width of the yard and the length 
and width of the house and then calculate and print the cost to mow the lawn.

After you finish, she decides that she will be busy on weekends so can charge 
more. She wants to charge 1/3 more on weekends than during the week. Modify your 
algorithm to include an estimate for mowing on the weekend.