If it were two hours later, it would be half as long until midnight as it would

游客2024-08-12 9

问题 If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?

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答案 0.875

解析设现在时间为X，根据题中的时间倍数关系，可列出2×[24-(X+2)]=24-(X+1)，解得X=21，所以时间是21点。

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Ifitweretwohourslater,itwouldbehalfaslonguntilmidnightasitwould