document.write( "Question 220159: He drove 150 miles in 2.5 hours. What was his average speed, in miles per hour?\r
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Algebra.Com's Answer #165334 by colliefan(242)\"\" \"About 
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He drove 150 miles in 2.5 hours. What was his average speed, in miles per hour?\r
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\n" ); document.write( "\n" ); document.write( "Speed = distance / time
\n" ); document.write( "speed = 150 miles / 2.5 hours
\n" ); document.write( "speed = 60 miles / hour or 60 miles per hour \r
\n" ); document.write( "\n" ); document.write( "Always, use the units because if you are doing the wrong calculation, they will help you see that.
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