document.write( "Question 142745: A truck is loaded with sugar cane and driven to a sugar mill 50 km away. The truck is then off-loaded and returns empty. The speed of the loaded truck is five times slower than that of the empty truck. If the driving time to the mill and back is 2 hours and 30 minutes, calculate the speed of the loaded truck. \n" ); document.write( "
Algebra.Com's Answer #103930 by checkley77(12844)\"\" \"About 
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50/x+50/(5x)=2.5
\n" ); document.write( "(50*5+50)/5x=2.5
\n" ); document.write( "(250+50)/5x=2.5
\n" ); document.write( "300/5x=2.5
\n" ); document.write( "5x*2.5=300
\n" ); document.write( "12.5x=300
\n" ); document.write( "x=300/12.5
\n" ); document.write( "x=24 kph for the loaded truck.
\n" ); document.write( "5*24=120 kph for the unloaded truck.
\n" ); document.write( "proof:
\n" ); document.write( "50/24+50/120=2.5
\n" ); document.write( "2.0833+.41667=2.5
\n" ); document.write( "2.5=2.5\r
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