document.write( "Question 1089405: John walks 15km/hr for 3 hrs and then rides a bike for 1 hour covering 9km. What is his average speed for the whole trip? \n" ); document.write( "
Algebra.Com's Answer #703744 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "John walks 15km/hr for 3 hrs and then rides a bike for 1 hour covering 9km. What is his average speed for the whole trip?
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\n" ); document.write( "\n" ); document.write( "\"John walks 15km/hr for 3 hrs . . . \"\r
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\n" ); document.write( "\n" ); document.write( "I do not believe in these numbers. More precisely, I do not believe in walking speed of 15 km/h.\r
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