document.write( "Question 267786: IF A TRUCK LEFT TRAVELING NORTH AT 80 KM/H. AND ONE HOUR LATER ANOTHER TRUCK LEFT TRAVELING SOUTH AT 60 KM/H. HOW MANY HOURS HAD THE FIRST TRUCK TRAVELED WHEN THEY WERE 150 KM APART
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Algebra.Com's Answer #196434 by palanisamy(496)![]() ![]() ![]() You can put this solution on YOUR website! A TRUCK LEFT TRAVELING NORTH AT 80 KM/H. \n" ); document.write( "AND ONE HOUR LATER ANOTHER TRUCK LEFT TRAVELING SOUTH AT 60 KM/H. \n" ); document.write( "After a time t hours, after the first truck had left, \n" ); document.write( "The distance travelled by the first truck = 80t kms \n" ); document.write( "The distance travelled by the second truck = 60(t-1) kms \n" ); document.write( "Given the distance between them is 150 kms \n" ); document.write( "80t+60(t-1) = 150 \n" ); document.write( "80t+60t-60 = 150 \n" ); document.write( "140t = 150+60 \n" ); document.write( "140t = 210 \n" ); document.write( "t = 210/140 \n" ); document.write( "t = 1.5 hours \n" ); document.write( "t = 1 h 30 m \n" ); document.write( " |