Studenti incunadjusted tribal $160.000 Accounts recevable. Allowance for doubtful accounts Sales..... Sales returns and allowances. 380.000 10.000 Instructions a) Prepare adjusting journal entries assuming that the estimate of uncollectibles is determined by using 396 of gross accounts receivable. (show your calculations & round to the nearest dollar) b) Prepare adjusting journal entries assuming that the estimate of uncollectibles is determined by using 1.5% of NET sales. (show your calculations & round to the nearest dollar)