+22 Kenneth and Marshall started cycling from the same starting point along a track. Both started cycling at the same time and they did not change their speeds throughout. Kenneth reached the end of the track in 2 hours: Marshall covered only 4/5 of the track in that time. Given that Kenneth's average speed was 2 km/h faster than Marshall, find the length of the track.
+1926 Let's note something really quickly.
If Kenneth ran 2 hours, then he ran 4 kilometers more than Marshall.
So 4 kilometers is 1/5 of the track's length.
Thus, we have \(1/5x = 4\) where x is the length of the track.
We have
\(x=20\)
So the track was 20km.
So our answer is 20.
Thanks! :)
