please i need answer for decision table and tree

Create the decision table and tree for the following narratives: 1 The details of procedure for dealing with delivery charges for goods bought from ABC Company is given below: For calculating the delivery charges, customers are divided into two categories, those whose sales region code is 10 miles or above and those with the code of less than 10 miles. If the code is less than 10 miles and the invoice amount is less than 10,000 SAR, the delivery charge to be added to the invoice total is 200 SAR. But if the invoice value is for 10,000 SAR or more, the delivery charge is 100 SAR 1 If the code is equal to or greater than 10, the corresponding delivery charges are 250 SAR and 150 SAR respectively