If it takes a person 50 seconds to travel one mile. What is her speed in mph?
請例出步驟 謝謝
Simple math question
2008-01-03 3:51 pm
回答 (2)
2008-01-03 4:14 pm
✔ 最佳答案
mph=miles per hour.one hour has 60*60 seconds= 3600 seconds,
therefore she can travel 3600/50 miles in one hour, i.e., 72 miles per hour (mph).
2008-01-03 4:17 pm
mph = mile per hour
1mile/50sec
= 1/50(mile) /1sec // 上下除50
= 60/50(mile)/1min // 60sec = 1min 上下乘60
= 60x60/50(mile)/1hour // 60min = 1hour 上下乘60
= 72mph
1mile/50sec
= 1/50(mile) /1sec // 上下除50
= 60/50(mile)/1min // 60sec = 1min 上下乘60
= 60x60/50(mile)/1hour // 60min = 1hour 上下乘60
= 72mph
收錄日期: 2021-04-25 13:20:47
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