document.write( "Question 253819: What would the average speed for a journey leaving by bus at 7:40 and arriving at 9:00 be? \n" ); document.write( "
Algebra.Com's Answer #186157 by Theo(13342)\"\" \"About 
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depends on the distance traveled.\r
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\n" ); document.write( "\n" ); document.write( "if its highway miles, the buses travel about 55 to 70 miles an hour.\r
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\n" ); document.write( "\n" ); document.write( "if it suburban streets, the buses travel somewhere between 20 and 40 miles an hour.\r
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\n" ); document.write( "\n" ); document.write( "if it's heavy city traffic, they might only travel 15 to 30 miles an hour, sometimes even less depending on the congestion.\r
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\n" ); document.write( "\n" ); document.write( "if you know the miles, then you can calculate the speed.\r
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\n" ); document.write( "\n" ); document.write( "suppose the miles are 20.\r
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\n" ); document.write( "\n" ); document.write( "7:40 to 9:00 is 1 hour and 20 minutes which is 1.33 hours.\r
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\n" ); document.write( "\n" ); document.write( "20 miles divided by 1.33 hours would be 15 miles an hour.\r
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\n" ); document.write( "\n" ); document.write( "15 miles per hour * 1.33 hours = 20 miles.\r
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