document.write( "Question 998504: The family reached a motorway at 11:00 what was their average speed for the next hour in car journey \n" ); document.write( "
Algebra.Com's Answer #616263 by Theo(13342)\"\" \"About 
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you are mising some key information here.\r
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\n" ); document.write( "\n" ); document.write( "your statement:\r
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\n" ); document.write( "\n" ); document.write( "The family reached a motorway at 11:00 what was their average speed for the next hour in car journey.\r
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\n" ); document.write( "\n" ); document.write( "the general formula used is rate * time = distance.\r
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\n" ); document.write( "\n" ); document.write( "if you have 2 of those components, you can solve for the third.\r
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\n" ); document.write( "\n" ); document.write( "you actually gave none of those components.\r
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\n" ); document.write( "\n" ); document.write( "the fact that the family reached the motorway at 11:00 says nothing about the rate that they were traveling at, nor the time that they were traveling at, nor the distance they traveled.\r
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\n" ); document.write( "\n" ); document.write( "if you were looking for their average speed, you need to provide the time they took to travel the distance and the distance that they traveled.\r
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\n" ); document.write( "\n" ); document.write( "the average speed means the same thing as the rate in the formula rate * time = distance\r
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\n" ); document.write( "\n" ); document.write( "example:\r
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\n" ); document.write( "\n" ); document.write( "the family arrived at the motorway at 11:00 AM and arrived at their destination at 5:00 PM and they traveled a distance of 120 miles. What was their average speed.\r
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\n" ); document.write( "\n" ); document.write( "now you can solve because you have time and distance, so you can solve for rate in the formula rate * time = distance.\r
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\n" ); document.write( "\n" ); document.write( "the time is 5:00 PM minus 11:00 AM = 6 hours.
\n" ); document.write( "the distance = 120 miles.\r
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\n" ); document.write( "\n" ); document.write( "rate * time = distance becomes rate * 6 = 120.\r
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\n" ); document.write( "\n" ); document.write( "solve for rate to get rate = 120/6 = 20 miles per hour.\r
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