May $2$Charlene books a fishing tour with Adventure Fishing for herself and four friends at the group discount price $($$$1,035=$ $$2075).$ The tour is scheduled for May $7.$May $7$The fishing tour occurs. Adventure Fishing asks that payment be made within $30$ days of the tour and offers a $5\%$ discount for payment within $15$ days.May $9$Charlene is upset that no one caught a single fish and asks management for a discount. Adventure Fishing has a strict policy of no discounts related to number of fish caught.May $15$Upon deeper investigation, management of Adventure Fishing discovers that Charlene$$s tour was led by a new guide who did not take the group to some of the better fishing spots. In concession, management offers a sales allowance of $40\%$ of the amount due.May $20$Adventure Fishing receives the amount owed by Charlene.