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[Problem Solving]

试题详情

题目:

Before a certain tire is used, 40 percent of its total weight consists of tread.  If during a lifetime of use, 50 percent, by weight, of the tire's tread is lost and no other parts of the tire is lost, what per cent of the tire's total remaining weight consists of the remaining tread?

选项:

A、55%
B、20%
C、25%
D、30%
E、35%

答案:

C

提问:

这题没太看懂问啥?

解答:

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阅读1275
解答: sysadmin

提问:

这题没太看懂问啥?

解答:

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阅读1276
解答: sysadmin老师

提问:

是求剩下的tire中含剩下的tread的百分比吗

解答:

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阅读1261
解答: sysadmin老师

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