不是很明白这道题的意思。。。希望有高手可以指导一下！！！！万分感谢！！！！
161.Beginning in January of last year, Carl made deposits of $120 into his account on the 15th of each month for several cinsecutive months and then made withdrawls of $50 from the account on the 15th of each of the remaining months of last year. There were no other transactions in the account last year.If the closing balance of Carl's account for May of last year was $2,600,what was the range of the monthly closing balances of Carl's account last year?
(1) Last year the closing balance of Carl's account for April was less than $2,625
(2) Last year the closing balance of Carl's account for June was less than $2,675作者: ReneeKuang 时间: 2012-5-18 06:58
