document.write( "Question 872170: Carlos walks around the track 10 times at a rate of x laps per hour. He runs around the track 8 times at a rate of 3x laps per hour. Write and solve an expression for the time it takes him to go 18 times around the track. \n" ); document.write( "

Algebra.Com's Answer #525978 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Carlos walks around the track 10 times at a rate of x laps per hour.
\n" ); document.write( " He runs around the track 8 times at a rate of 3x laps per hour.
\n" ); document.write( " Write and solve an expression for the time it takes him to go 18 times around the track.
\n" ); document.write( ":
\n" ); document.write( "Write a time equation; time = dist/speed
\n" ); document.write( ":
\n" ); document.write( "Walk time + run time = total time
\n" ); document.write( " $\"10%2Fx\"$ + $\"8%2F%283x%29\"$ =
\n" ); document.write( "find the common denominator (3x)
\n" ); document.write( " $\"%28%283%2810%29+%2B+8%29%29%2F%283x%29\"$ = $\"38%2F%283x%29\"$ time to go around 18 times \n" ); document.write( "

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