The Aging Schedule of a Firm Shows That 40% of the Receivables

The aging schedule of a firm shows that 40% of the receivables are collected in 18 days and the remaining 60% of the receivables are collected in 50 days. The days sales outstanding (DSO) of the firm is _____.

A) 12.32 days
B) 12.78 days
C) 20.34 days
D) 40.56 days
E) 37.20 days