document.write( "Question 503745: two trucks are travel towards each other from points 1,ooo km apart. The two trucks meet each other in 8 hours. What is the average speed of each truck if one truck travels 15 kilometersper hour faster than other?
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Algebra.Com's Answer #339406 by mananth(16946) You can put this solution on YOUR website! Truck I x km/h \n" ); document.write( "Truck II x+ 15 \n" ); document.write( ".. \n" ); document.write( "They are moving towards each other They are moving towards each other \n" ); document.write( " \n" ); document.write( "So add up their speed. \n" ); document.write( " \n" ); document.write( "combined speed = x+ 1 x + 15 \n" ); document.write( "( 2 x + 15 ) \n" ); document.write( "Time = 8 hours \n" ); document.write( "Distance = 1000 miles \n" ); document.write( "Distance = speed * time \n" ); document.write( "( 2 x 15 )* 8 = 1000 \n" ); document.write( "16 x + 120 = 1000 \n" ); document.write( "16 x = 1000 + -120 \n" ); document.write( "16 x = 880 \n" ); document.write( "/ 16 \n" ); document.write( "x= 55 mph Truck I \n" ); document.write( "Truck II 55 + 15 = 70 mph \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |