document.write( "Question 1119092: A car travels 30 kph faster than a truck. The car covers 540 km in three hours less than the time it takes the truck to travel the same distance. What is the speed of the car? What about the truck? \n" ); document.write( "
Algebra.Com's Answer #734547 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "                  SPEED         TIME           DISTANCE\r\n" );
document.write( "CAR               r+30          540/(r+30)       540\r\n" );
document.write( "TRUCK              r            540/r            540\r\n" );
document.write( "DIFFERENCE                       3\r\n" );
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\n" ); document.write( "\n" ); document.write( "Truck's time is larger than the car's time.\r
\n" ); document.write( "\n" ); document.write( "\"540%2Fr-540%2F%28r%2B30%29=3\"-------simplify and solve this for r.\r
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\n" ); document.write( "\n" ); document.write( "\"180%2Fr-180%2F%28r%2B30%29=1\"\r
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\n" ); document.write( "\"r%5E2%2B30r-5400=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"r=%28-30%2Bsqrt%2822500%29%29%2F2\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28r=60%29\"------truck speed\r
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\n" ); document.write( "\n" ); document.write( "\"r%2B30=highlight%2890%29\"------car speed
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