1. If the salary is less than or equal to 50000 rand, tax is calculated as 30% of the salary. If the salary is between 50000 and 80000, tax is 15000 plus 35% of the amount over 50000. If the salary is greater than 80000, the tax is 25500 plus 40% of the amount over 80000. Write a program that reads the salary from a text box and prints out the tax. Try it out on a variety of salaries, checking the answers with a calculator.