document.write( "Question 607364: Jodie bicycles 7km/h faster than Carlos. In the same time if takes Carlos to bicycle 51 km and Jodie can bicycle 72km. How fast does each bicycle travel? \n" ); document.write( "

Algebra.Com's Answer #382698 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Jodie bicycles 7km/h faster than Carlos.
\n" ); document.write( " In the same time if takes Carlos to bicycle 51 km and Jodie can bicycle 72km. How fast does each bicycle travel?
\n" ); document.write( ":
\n" ); document.write( "Let c = C's riding speed
\n" ); document.write( "then
\n" ); document.write( "(c+7) = J's riding speed
\n" ); document.write( ":
\n" ); document.write( "Distance varies directly with speed, so we can write it
\n" ); document.write( " $\"c%2F%28%28c%2B7%29%29\"$ = $\"51%2F72\"$
\n" ); document.write( "cross multiply
\n" ); document.write( "72c = 51(c+7)
\n" ); document.write( "72c = 51c + 357
\n" ); document.write( "72c - 51c = 357
\n" ); document.write( "21c = 357
\n" ); document.write( "c = $\"357%2F21\"$
\n" ); document.write( "c = 17 km/hr is C's speed
\n" ); document.write( ":
\n" ); document.write( "You can find J's speed
\n" ); document.write( ":
\n" ); document.write( "Check your solutions by finding the time for each, they should be equal
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