Suppose the nominal interest rate is i = 10%, the time cost of a round trip to

Question:

Suppose the nominal interest rate is i = 10%, the time cost of a round trip to the bank is $25 and annual expenditure is $72,000.
(a) If a consumer makes N trips to the bank how much interest do they give up during the period? What is the total time cost of those N trips?
(b) Calculate the optimal number of trips to the bank using the Baumol-Tobin model.
(c) How much is withdrawn in each trip?
(d) What is average money holding?