Please answer this question COMPLETELY!

Bernice's bike shop receives the following Trade discounts: 35/25/15. The vendors price list indicates that 35 percent off list price is for purchasing bikes in quantities of 100 or more., 25 percent off list price is for assembling the bikes for customers, and 15 percent is for sales promotion and local advertising. Bernie is given terms of 4/15, n/30, and he pays by day 15. A. How much will he pay the manufacturer for the order of 110 bikes. B. For how much will the manufacturer credit Bernice's account. C. If Bernie has a cash flow problem and waits until day 30 to pay the manufacturer, what is his effective cost of financing for the year