E17-7 Compute the following items for the statement of cash flows of Pep.com:

a. Beginning and ending Accounts Receivable are $24,000 and $19,000, respectively. Credit sales for the period total $81,000. How much are cash collections?

b. Cost of goods sold is $84,000. Beginning Inventory balance is $29,000, and ending Inventory balance is $21.000. Beginning and ending Accounts Payable are $11,000 and $8.000, respectively. How much are cash payments for inventory?