4. (15%) R Co.'s actual sales on account were as follows: February, P 160,000; March P100,000, and April P180000. Experience has shown that such sales are usually collected as follows: Month of sale , 20%; Month after sale, 50%; second month after sale, 25% and never collected and written off in third month after sale, P596. Required: (a) Compute the budgeted cash collections of May, if May sales on account are budgeted at P150,000. (b) Compute the balance of accounts receivable at Apri 30 (c) Compute the balance of accounts receivable at May 31