document.write( "Question 251783: Two jets are traveling toward each other and are 4000km apart. The rate of one jet is 100km/hr faster than the rate of the other. If the jets pass each other after 2.5 hours, what is the rate of each jet? \n" ); document.write( "
Algebra.Com's Answer #183468 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Two jets are traveling toward each other and are 4000km apart. The rate of one jet is 100km/hr faster than the rate of the other. If the jets pass each other after 2.5 hours, what is the rate of each jet? \n" ); document.write( "--- \n" ); document.write( "closing speed for the two jets is x + x+100 = 2x+100 km/h \n" ); document.write( "------------ \n" ); document.write( "Equation: \n" ); document.write( "time = distance/rate = 4000/(2x+100) hrs = 2.5 hrs \n" ); document.write( "---\r \n" ); document.write( "\n" ); document.write( "2000/(x+50) = 2.5 \n" ); document.write( "2.5x + 125 = 2000 \n" ); document.write( "2.5x = 1875 \n" ); document.write( "--- \n" ); document.write( "x = 750 km/h (speed of the slower jet) \n" ); document.write( "x+100 = 850 km/h (speed of the faster jet) \n" ); document.write( "============================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |