plz solve only problem 1

Problem No 1-

18) Solve the problem using the rule of 78. A fisherman buys a new boat for $60,000. He makes a down payment of $17,000 and finances the balance at 10% APR over 60 months. Before making the 45th payment, the fisherman decides to pay the remaining balance on the loan. How much interest will the fisherman save? Find the payoff amount for the laon paid in full before its due date. $700.97 $720.61 $1081.18 O $774.85Rolf's Golf store sells golf balls for $23 per dozen. The store's overhead expenses are 25% of cost and the owners require a profit of 20% of cost. a. How much does Rolf's Golf store buy the golf balls for? $ per dozen Round to the nearest cent b. What is the price needed to cover all the costs and expenses? $ . Round to the nearest cent 1:. What is the highest rate of markdown at which the store will still break even? ' to Round to two .-:i'ecr'rr.-aiI places d. What markdown rate would price the golf balls at cost? to Round to Mo decimal places