SOLUTION: Straight from text: A boat moves 15.0 km across a lake in 45.0 minutes. What was the average speed of the boat in km/hr?

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Question 266074: Straight from text: A boat moves 15.0 km across a lake in 45.0 minutes. What was the average speed of the boat in km/hr?
Found 2 solutions by josmiceli, stanbon:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
s+=+d%2Ft
s+=+15%2F45 km/min
15%2F45 km/min x 60 min/hr = %281%2F3%29%2A60 km/hr
%281%2F3%29%2A60+=+20 km/hr
The ave speed of the boat is 20 km/hr

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!

Straight from text: A boat moves 15.0 km across a lake in 45.0 minutes. What was the average speed of the boat in km/hr?
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15 km / 45 min = 15 km/(3/4)hr
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invert the 3/4 and multiply to get:
= 15*(4/3) km/hr
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= 20 km/hr
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Cheers,
Stan H.