SOLUTION: Starting at the same point, Jack and Jill go hiking in opposite directions. If Jack hikes at a speed of 15 miles per hour, and Jill hikes at a speed of 9 miles per hour, how far ap

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Question 1078524: Starting at the same point, Jack and Jill go hiking in opposite directions. If Jack hikes at a speed of 15 miles per hour, and Jill hikes at a speed of 9 miles per hour, how far apart will they be in 3 hours?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Not nice that he'd leave her alone, but Jack was always kind of a jerk.
Rate*Time=Distance
R%5B1%5D%2At=D%5B1%5D
R%5B2%5D%2At=D%5B2%5D
D%5B2%5D-D%5B1%5D=R%5B2%5D%2At-R%5B1%5D%2At
D%5B2%5D-D%5B1%5D=%28R%5B2%5D-R%5B1%5D%29t
Substituting,
D%5B2%5D-D%5B1%5D=%2815-9%293
D%5B2%5D-D%5B1%5D=6%2A3
D%5B2%5D-D%5B1%5D=18
18 miles apart.