document.write( "Question 956910: the average speed of car is twice the speed of the truck,truck covers 648km in 24 hours,hom much the car cover in 15 seconds? \n" ); document.write( "
Algebra.Com's Answer #584682 by josmiceli(19441)\"\" \"About 
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The truck's speed is:
\n" ); document.write( "\"+648+%2F+24+\" km/hr
\n" ); document.write( "-------------------
\n" ); document.write( "The car's speed is:
\n" ); document.write( "\"+2%2A%28+648+%2F+24+%29+=+648%2F12+\"
\n" ); document.write( "\"+648%2F12+=+54+\" km/hr
\n" ); document.write( "------------------------
\n" ); document.write( "In terms of just units:
\n" ); document.write( "[ km/hr ]x( hrs/min ]x[ min/sec ] = km/sec
\n" ); document.write( "then,
\n" ); document.write( "[ km/sec ]x[ sec ] = km
\n" ); document.write( "-------------------------
\n" ); document.write( "\"+54%2A%28+1%2F60+%29%2A%28+1%2F60+%29+\" = .015 km/sec
\n" ); document.write( "and
\n" ); document.write( "\"+.015%2A15+=+.225+\" km
\n" ); document.write( "-----------------------
\n" ); document.write( "convert to meters
\n" ); document.write( "[ km ] x [ m/km ] = m
\n" ); document.write( "\"+.225%2A%28+1000%2F1+%29+=+225+\"
\n" ); document.write( "The car goes 225 m in 15 sec
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