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

游客2024-08-08  5

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 0.875

解析 设现在的时间为X,根据题意可得下列方程式:24一(x+2)=1/2[24一(x+1)],得x=21,所以现在是21:00。
转载请注明原文地址:https://tihaiku.com/zcyy/3710597.html
最新回复(0)