Answer:
Days Sales outstanding is the average number of days that a business take to collect the cash after making sales on account.
Days Sales outstanding = ( 40% x 10 days ) + ( 60% x 70 days ) = ( 0.4 x 10 ) + ( 60% x 70 ) = 46 Days
Receivable per day = 1,921,000/365
Average Receivables = $5,263.01 x 46 = $242,098.63
Trade credit to customer who take discount = (3%x365)/(97%x20) = 56.44%
Trade credit to customer who don't take discount = (3%x365)/(97%x60) = 18.8%
As the percentage of customers who take discount is higher than the customer who don't. If McEwan’s tightened its credit the customers who take discount can reduce the receivables.