software engineerign question

1. A program computes its output variable T according to the following formula: T = W*0.1 + X*0.2 + Y*0.3 + Z*0.4 W> 50 and X> 50 and Y> 50 and Z> 50 = W*0.4+ X*0.3 + Y*0.2 + Z*0.1 Otherwise The input variables of this program are W, X, Y and Z. All of them are non-negative values. Calculate the following: When we apply equivalence class testing technique to design a test suite to test the above-mentioned program, a) the number of equivalence classes for W b) the number of equivalence classes for the program c) the number of invalid test cases (test cases with invalid input values) in the test suite ii) When we apply boundary value testing technique to design a test suite to test the above-mentioned program, a) the number of boundary values for W b) the number of boundary values for the program c) the number of valid test cases (test cases with valid input values) in the test suite