
急求解八年级英语智力题!!!!!!说出为什么!!!
Howmanyminutesisitbefore12noonif132minuteslateritwillbe3timesasmanyminutesbefore3pm?...
How many minutes is it before 12 noon if 132 minutes later it will be 3 times as many minutes before 3pm?
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12 minutes
列方程
设12点前是X minutes
3点前剩余Y minutes,则
X+132=3Y
132+Y=180(12点到3点是180 minutes)
解方程组
列方程
设12点前是X minutes
3点前剩余Y minutes,则
X+132=3Y
132+Y=180(12点到3点是180 minutes)
解方程组
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