Needing help in advanced managerial accounting. Please help me

5. Avalon Company has the following sales pattern February March April May 120,000 140,000 150,000 180,000 25% of sales each month are cash sales. Of the remaining 75%: 40% are collected in the month of sale. 50% are collected in the 1st month after the sale. 10% are collected in the 2nd month after the sale. a. Calculate the cash collected in May. b. Calculate the balance of accounts receivable at the end of May