document.write( "Question 56890: Two camper vans leave Arrowhead Lake at the same time, one traveling north at a speed of 10 km/h faster than the other, which is traveling south. After 3 hours, the camper vans are 420 km apart. Find their speeds. \n" ); document.write( "
Algebra.Com's Answer #38622 by stanbon(75887)\"\" \"About 
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Two camper vans leave Arrowhead Lake at the same time, one traveling north at a speed of 10 km/h faster than the other, which is traveling south. After 3 hours, the camper vans are 420 km apart. Find their speeds.
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\n" ); document.write( "South van DATA:
\n" ); document.write( "rate = x kph; time= 3 hrs.; distance = 3x km
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\n" ); document.write( "North van DATA:
\n" ); document.write( "rate = x+10 kph; time = 3 hrs; distance = 3(x+10)=3x+30 km
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\n" ); document.write( "EQUATION:
\n" ); document.write( "dist. + dist. = 420 km
\n" ); document.write( "3x+3x+30=420
\n" ); document.write( "6x=390
\n" ); document.write( "x= 65 kph (speed of south-bound van)
\n" ); document.write( "x+10= 75 (speed of north-bound van)
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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