A car is traveling at a rate of 54 kilometers per hour. What is the car's rate in kilometers per minute? How many kilometers will the car travel in 20 minutes?
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OpenStudy (duckerstar146):
So first of all, we know that there are 60 seconds in one minute, so lets use that to divide 60 by 54
OpenStudy (megans20):
Alright.. I tried this. 54 km/1 hr x 1 hr/60 min
OpenStudy (megans20):
But after that I was lost.
OpenStudy (duckerstar146):
So when you divide 54/60, you should get 0.9, as 54 is just a tad bit less than 60, so it won't perfectly fit
OpenStudy (megans20):
So what is the 0.9 ?
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OpenStudy (duckerstar146):
0.9 is the amount of kilometers driven in 1 minute
OpenStudy (duckerstar146):
We are trying to find 20 minutes, so what is the next thing we do?
OpenStudy (megans20):
Multiply 0.9 by 20 to get 18. (: Thank you for your help!
OpenStudy (duckerstar146):
Your welcome! And if you want further proof, since 20 minutes is 1/3 of an hour, multiply 18 by 3, and you should get 54!
OpenStudy (megans20):
Awesome! Thanks!
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