document.write( "Question 107374: Patrick drove 3 hours to attend a meeting. On the return trip his spped was 10 miles per hour and the trip took 4 hours. What was his speed each way? \n" ); document.write( "
Algebra.Com's Answer #78142 by solver91311(24713)\"\" \"About 
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You know his speed on the return trip because it was given: 10 mph. Now we need to find out how far he travelled.\r
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\n" ); document.write( "\n" ); document.write( "\"d=rt\" is the formula for distance, given speed and time. We should be able to assume that he drove just as far going to the meeting as he did coming back.\r
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\n" ); document.write( "\n" ); document.write( "\"d=+10mph+%2A+4+hrs\"
\n" ); document.write( "\"d=+40+miles\"\r
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\n" ); document.write( "\n" ); document.write( "Now we need to rearrange our formula by dividing both sides by t, allowing us to say that:\r
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\n" ); document.write( "\n" ); document.write( "\"r=d%2Ft\"
\n" ); document.write( "\"r=40m%2F3hrs\"
\n" ); document.write( "\"r=13.33...\"\r
\n" ); document.write( "\n" ); document.write( "So he averaged 13 and 1/3 miles per hour on the trip to the meeting.\r
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\n" ); document.write( "\n" ); document.write( "He must have been on the I405 in Los Angeles during rush hour.
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