SOLUTION: When Sheila asked Margie to deliever camp supplies across the lake, they agreed to meet on the water. Shelia's boat can travel at 10km/h, while Margie's boat can do 12km/h. If the

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Question 52811: When Sheila asked Margie to deliever camp supplies across the lake, they agreed to meet on the water. Shelia's boat can travel at 10km/h, while Margie's boat can do 12km/h. If the lake is 6.6 km wide and Sheila and Margie leave at the same time, how much time will it be before they meet?
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Distance = rate*time or d=rt
They both travel the same amount of time:t (in hours)
Sheila's boat travels: 10t
Margie's boat travels: 12t
Altogether they travel: 6.6
So the problem we have to solve is:
10t+12t=6.6
(10+12)t=6.6
22t=6.6
22t/22=6.6/22
t=.3 hr
Most of us don't know off of the top of our head what .3 hrs is, so we might want to convert that to minutes.
t=.3(60 min)
t=18 min