作者yoly (摇哩～)
看板NTU-Exam
标题[问题] 梁明义总体经济学 97下期末考考古题问题
时间Sun Jun 19 21:59:49 2011
1.(c)(5%)Suppose you earn and spend $2,000 per month. You receive your
paycheck on the first day of the month and must decide how much of
it to hold as cash and how much to deposit in your savings account.
The savings account pays 0.025 interest; however, the bank charges
you $1 for each withdrawal you make during the month. What will be
your average demand for cash over the month? If the interest rate rose
to 0.10, what would be your average demand for cash over the month?
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我算的答案分别是 r=0.025时，average demand for cash over the month= 200
r=0.10 C/2=100
想问一下答案是否正确？
如果错的话... 麻烦简单告知一下算法!!
作业错这题，然後忘了去订正，所以麻烦大家噜！！
祝明天考试顺利，谢谢！！
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1F：推 naivekasa :没错啦~其他题目更难呢,这题最简单吧 06/20 00:01
2F：推 didiboy170 :推很简单得一题 结果考试也是这题!! 06/21 13:18