The comparative balance sheets of Sloan Company reveal that accounts receivable (before deducting allowances) increased by $15,000 in 2016. During the same time period, the allowance for uncollectible accounts increased by $2,100. If sales revenue was $120,000 in 2016 and bad debts expense was 3% of sales, how much cash was collected from customers during the year

An allergy products superstore buys 6000 of their most popular model of air filters each year. the price of the air filters is $18. the cost of ordering and receiving shipments is $12 per order. accounting estimates annual carrying costs are 20% of the price. the supplier lead time is 2 days. the store operates 240 days per year. each order is received from the supplier in a single delivery. there are no quantity discounts. what is the store’s minimum total annual cost of placing orders & carrying inventory?