单项选择题

A widow received of her husband’s estate，and each of her three sons received
of the balance．If the widow and one of her sons received a total of $60，000 from the estate．what was the amount of the estate（）

A. $90，000
B. $96，000
C. $108，000
D. $135，000
E. $180，000

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单项选择题
A manufacture packages soap powder in containers of three different sizes．The amount of soap powder in a full large container could fill exactly 3 of the medium containers or exactly 5 of the small containers．If an equal number of small and large containers are to be filled with the amount of soap powder that would fill 90medium containers，how many small containers will be filled？（）

A. 25
B. 27
C. 30
D. 45
E. 55
单项选择题
A certain money market account that had a balance of $48，000 during all of last monthearned$360 in interest for the month．At what simple annual interest rate did the account earn interest last month（）

A. 7%
B. 7.5%
C. 8%
D. 8.5%
E. 9%
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