<PRE><B>Question 864489</B>
15 km / 3 3/4 hours
Doing the division we get km/hour
15 / ( 3 3/4 )
15 / ( 15/4 )
15 * ( 4/15 )
60/15
4
4 km / hr
So in 1/2 hour * 4 km / hr = 2 km
In 1 1/6 hour * 4 km / hr = 
7/6 * 4 = 28/6 = 4 4/6 = 4 2/3 km</PRE>