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

admin2011-03-05 79

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 now9

选项

答案21:00

解析设现在的时间为x，根据题意可得下列方程式：24-(x+2)=1/2[24-(x+1)], 得x=21，所以现在是21:00。

转载请注明原文地址:https://www.kaotiyun.com/show/ZbyK777K

A类竞赛（研究生）

相关试题推荐

随机试题

最新回复(0)