document.write( "Question 888635: Two cars leave from a city at the same time and travel in the same direction. One car travels two and two-thirds times as fast as the other. After 1 hour, they are 50 miles apart. What are the speeds of the cars? Write and solve a system of equations. \n" ); document.write( "
Algebra.Com's Answer #537529 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+s+\" = the speed of the slower car
\n" ); document.write( "\"+%28+8%2F3+%29%2As+\" = the speed of the faster car
\n" ); document.write( "Let \"+d+\" = the distance the faster car travels in \"+1+\" hr
\n" ); document.write( "\"+50+-+d+\" = the distance the slower car travels in \"+1+\" hr
\n" ); document.write( "----------------------------------------
\n" ); document.write( "Equation for slower car:
\n" ); document.write( "(1) \"+50+-+d+=+s%2A1+\"
\n" ); document.write( "Equation for faster car:
\n" ); document.write( "(2) \"+d+=+%28+8%2F3+%29%2As%2A1+\"
\n" ); document.write( "----------------------
\n" ); document.write( "Substitute (2) into (1)
\n" ); document.write( "(1) \"+50+-+%28+8%2F3+%29%2As+=+s+\"
\n" ); document.write( "(1) \"+150+-+8s+=+3s+\"
\n" ); document.write( "(1) \"+11s+=+150+\"
\n" ); document.write( "(1) \"+s+=+13+636+\" mi/hr
\n" ); document.write( "\"+%28+8%2F3%29%2As+=+%28+8%2F3+%29%2A%28+150%2F11+%29+\"
\n" ); document.write( "\"+%28+8%2F3+%29%2As+=+36.364+\" mi/hr
\n" ); document.write( "---------------------------
\n" ); document.write( "The faster car's speed is 36.364 mi/hr
\n" ); document.write( "The slower car's speed is 13.636 mi/hr
\n" ); document.write( "----------------------------------
\n" ); document.write( "check:
\n" ); document.write( "(1) \"+50+-+d+=+s%2A1+\"
\n" ); document.write( "(1) \"+50+-+d+=+150%2F11+\"
\n" ); document.write( "(1) \"+d+=+550%2F11+-+150%2F11+\"
\n" ); document.write( "(1) \"+d+=+400%2F11+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+d+=+%28+8%2F3+%29%2As%2A1+\"
\n" ); document.write( "(2) \"+d+=+%28+8%2F3+%29%2A%28+150%2F11+%29+\"
\n" ); document.write( "(2) \"+d+=+400%2F11+\"
\n" ); document.write( "OK\r
\n" ); document.write( "\n" ); document.write( "
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