4. Find the simple interest rate for $40,000 worth of merchandise for your tourist store in Wisconsin Rapids with terms 2/10 - n/55, if the payment is made on the 10th day. Use exact time and ordinary interest. 5. Suppose in question #1 you can not pay until the 62nd day. You are charged a flat 1.1% Sufcharge fee. What would be your surcharge cost and what would be your equivalent simple interest rate? 6. Suppose in question #2 you can not pay until the 63rd day. You are charged a flat 1.2% surcharge fee. What would be your surcharge cost and what would be your equivalent simple interest rate? 7. Suppose in question as you can not pay until the 93rd day You are charged a flat 0,85% surcharge fee. What would be your surcharge cost and what would be your equivalent simple interest rate? 8. Suppose in question #4 you can not pay until the 87th day. You are charged a flat 0.9% surcharge fee. What would be your surcharge cost and what would be your equivalent simple interest rate?