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[Problem Solving]

试题详情

题目:

Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters. If the length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope, what is the maximum possible length, in centimeters, of the longest piece of rope?

选项:

A、82
B、118
C、120
D、134
E、152

答案:

D

提问:

只能用选项代入法吗?

解答:

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阅读1113
解答: sysadmin

提问:

只能用选项代入法吗?

解答:

点赞0
阅读1114
解答: sysadmin老师

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