In an 8.00 km race, one runner runs at a steady 11.8 km/hr and another runs at 14.8 km/hr
How far from the finish line is the slower runner when the faster runner finishes the race?
In an 8.00 km race, one runner runs at a steady 11.8 km/hr and another runs at 14.8 km/hr?
2009-09-29 1:53 am
回答 (2)
2009-09-29 2:01 am
✔ 最佳答案
The faster runner is going at 14.8 kph. So she takes8 km / ( 14.8 km/hr) = 0.54054 hours.
In that about of time, the slower runner goes
0.54054 hours x 11.8 km/hr = 6.378 km.
So he is 8 - 6.378 = 1.622 km from the finish line.
(Plus or minus 0.020 km)
2009-09-29 2:02 am
1.6km from the finish line.
收錄日期: 2021-05-02 22:25:41
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