Help with this exercise

you are to write a program which will read in a tax rate (as a percentage) and the prices of 5 items. the program is to calculate the total price, before tax, of the items and then the tax payable on those items, and then the total amount due. the tax payable is computed by appliying the tax rate percentage to the total price. all value are to be printed as output.

use the following steps to solve this problem:

1.define the problem using a defining diagram
2.create a solution algorithm using pseudocode
3.desk check your solution algorithm using two test cases
4.code the solution using the korn shell language
5.key the code into unix system under your home directory. include comments
6.give the program execute permission with the chmod command

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