document.write( "Question 1009856: City A and City B are 200 km apart. Harry rides his bike 20 km faster than Yoshi rides his bike. Find Harry's average speed if he travels from city A to city B in 1 1/7 hour less time than Yoshi. \n" ); document.write( "

Algebra.Com's Answer #625411 by ikleyn(52798) $\"\"$ $\"About$

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\n" ); document.write( "City A and City B are 200 km apart. Harry rides his bike 20 km faster than Yoshi rides his bike.
\n" ); document.write( "Find Harry's average speed if he travels from city A to city B in 1 1/7 hour less time than Yoshi.
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document.write( "Let u be the Harry' speed, in mph.\r\n" );
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document.write( "Then the Yoshi' speed was u-20.\r\n" );
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document.write( "Time Harry spent for the trip was  hours.\r\n" );
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document.write( "Time Yoshi spent for the trip was  hours.\r\n" );
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document.write( "An equation is \r\n" );
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document.write( " -  = ,    or\r\n" );
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document.write( " -  = .\r\n" );
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document.write( "Simplify and solve it for u.\r\n" );
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document.write( "As the first step, multiply both sides by 7u*(u-20).\r\n" );
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