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If it were two hours later, it would be half as long until midnight as it would
If it were two hours later, it would be half as long until midnight as it would
游客
2023-10-15
41
管理
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?
选项
答案
21:00
解析
设现在时间为x,根据题中的时间倍数关系,可列出2×[24一(x+2)]=24-(x+1),解得x=21,所以时间是21点。
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