Question 840399: I have gone 12 miles in 2 hours and 40 minutes,what is my average rate of speed?
fast am I going?
Answer by josh_jordan(263)   (Show Source):
You can put this solution on YOUR website! To solve, we need to set this problem up as an equation. We know that you went 12 miles in 2 hours and 40 minutes. So, let's first convert 2 hours and 40 minutes to just minutes. 2 hours and 40 minutes = 160 minutes. Now, we can set this up as an equation:
12/160 = x/60
In essence, this equation is asking the following: Going 12 miles per 160 minutes is equal to going x miles per 60 minutes.
To solve, multiply 12 by 60, set that on one side of the equal sign, then multiply 160 by x and set that on the other side of the equal sign. It will look like the following:
12 x 60 = 160x ----->
720 = 160x
Dividing both sides by 160 will give you your average rate of speed:
4.5 = x
Therefore, your rate of speed is 4.5 miles per hour.
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