document.write( "Question 1182475: Can you please help with the homework.
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document.write( "1. A man travels 180km from his farm to town in a loaded truck.on the return journey he is able to travel 30km/h faster having unloaded his produce in town.He saves one hour on the return journey by travelling faster.
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document.write( "1.1.1.calculate the speed of the truck to town
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document.write( "1.1.2. Calculate the speed of the truck from town. \n" );
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Algebra.Com's Answer #812534 by mananth(16946)![]() ![]() You can put this solution on YOUR website! speed of truck from town to farm be x km/h \n" ); document.write( "his speed from farm to town will be (x-30)\r \n" ); document.write( "\n" ); document.write( "distance from farm to town =180 km\r \n" ); document.write( "\n" ); document.write( "he takes more time to town \r \n" ); document.write( "\n" ); document.write( "time to town - time to farm = 1 hr\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "take LCM of denominator \r \n" ); document.write( "\n" ); document.write( "180x - 180(x-30)/ x(x-30) = 1\r \n" ); document.write( "\n" ); document.write( "180x -180x +180*30 = x(x-30)\r \n" ); document.write( "\n" ); document.write( "5400= x^2-30x\r \n" ); document.write( "\n" ); document.write( "x^2-30x-5400=0 \n" ); document.write( "Factorise \n" ); document.write( "(x - 90)(x + 60)=0\r \n" ); document.write( "\n" ); document.write( "x=90 or -60 \n" ); document.write( "Ignore negative\r \n" ); document.write( "\n" ); document.write( "speed from town = 90 km/h\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |