2 Please help me my last final, I need the answer as quick as possible only have 1 hour

Prepare a schedule of receipts from debtors for October, November, December Past experience shows that: 80% of debtors pay in the month following sale and receive a 5% discount 10% of debtors pay in the second month after the sale 8% of debtors pay in the third month after the sale 2% of debtors do not pay at all EE Schedule of Receipts from Debtors Month of Amount of Credit Sales Credit Sales Collections in: November October December July $20,000 1 E E % 3 pre August $15,000 September $18,000 October $ 16,000 November $21,000 Total to be received