simple interest loan

Refer to the information provided in Problem 16–17. Suppose PDQ needs $90,000 today to pay past-due bills. How much must PDQ borrow for each loan so that it has $90,000 available to pay the bills? How much of the total amount borrowed PDQ will actually be able to use?
Problem 16–17
PDQ Enterprise can borrow from its bank using a one-year (a) simple interest loan with a 12 percent quoted rate and no compensating balance or (b) discount interest loan with a quoted rate equal to 10 percent that requires a 15 percent compensating balance. What is the EAR of the lower cost loan? PDQ normally tries to keep its checking account balance close to $0.