SOLUTION: two cyclists start from the same time from two points which are 5km apart.if one moves west at 10kmph and the other moves east at 12kmph,what will be the distance between them aft

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Question 884636: two cyclists start from the same time from two points which are 5km apart.if one moves west at 10kmph and the other moves east at 12kmph,what will be the distance between them after 1 hour 30 minutes
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=Distance
We'll say biker 1 started at point x=0 and went west (negative)
D%5B1%5D=-10%2A%283%2F2%29=-15km
Biker 2 started at point x=5 and went east (positive)
D%5B2%5D=5%2B12%2A%283%2F2%29=5%2B18=23km
The distance between them is the difference.
D=23-%28-15%29
D=38km