document.write( "Question 1053201: ricky can ride bike 17km on his bike in the same lenght of time.he can walk 9km. if his speed is 4kph faster than his walking how fast does he walk ?
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Algebra.Com's Answer #668696 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Ricky can ride bike 17km on his bike in the same length of time.
\n" ); document.write( " he can walk 9km.
\n" ); document.write( " if his speed is 4kph faster than his walking how fast does he walk ?
\n" ); document.write( ":
\n" ); document.write( "let w = his walking speed
\n" ); document.write( "then
\n" ); document.write( "(w+4) = his biking speed
\n" ); document.write( ":
\n" ); document.write( "Write a time equation; time = dist/speed
\n" ); document.write( " $\"17%2F%28%28w%2B4%29%29\"$ = $\"9%2Fw\"$
\n" ); document.write( "cross multiply
\n" ); document.write( "17w = 9(w+4)
\n" ); document.write( "17w = 9w + 36
\n" ); document.write( "17w - 9w = 36
\n" ); document.write( "8w = 36
\n" ); document.write( "w = 36/8
\n" ); document.write( "w = 4.5 km/hr is his walking speed
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\n" ); document.write( "We can confirm this solution by finding the actual times
\n" ); document.write( "9/4.5 = 2 hrs
\n" ); document.write( "17/8.5 = 2 hrs \n" ); document.write( "

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