document.write( "Question 1130215: A bus averages 4 miles per hour faster than a trolley. If the bus travels 170 miles in the same time it takes the trolley to travel 150 miles, then what is the speed of each? \n" ); document.write( "

Algebra.Com's Answer #746873 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "The problem literally says that\r\n" );
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document.write( " = ,\r\n" );
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document.write( "where t is the speed of the trolley\r\n" );
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document.write( "170*t = 150*(t+4)\r\n" );
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document.write( "170t = 150t + 600\r\n" );
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document.write( "20t = 600\r\n" );
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document.write( "t = 600/20 = 30 miles per hour is the trolley speed    ANSWER\r\n" );
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document.write( "           and 30+4 = 34 mph is the bus speed.         Answer\r\n" );
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