document.write( "Question 251782: Two trucks leave Chicago traveling in opposite directions. One truck traveled at a rate of 70km/hr, the other at 80km/hr. After how many hours were the trucks 900 km apart? \n" ); document.write( "
Algebra.Com's Answer #183464 by stanbon(75887)\"\" \"About 
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Two trucks leave Chicago traveling in opposite directions. One truck traveled at a rate of 70km/hr, the other at 80km/hr. After how many hours were the trucks 900 km apart?
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\n" ); document.write( "Their separation speed was 70+80 = 150 mph.
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\n" ); document.write( "Equation:
\n" ); document.write( "time = distance /rate
\n" ); document.write( "time = 900 mi/150 mph = 6 hrs.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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