Question: 4. Enforce the preconditions for the following methods: a. splitBill() b. caculateMonthlyTakehomePay() When you are finished with the precondition enforcement, all tests for these methods

4. Enforce the preconditions for the following methods:

a. splitBill()

b. caculateMonthlyTakehomePay()

When you are finished with the precondition enforcement, all tests for these methods should pass.

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