document.write( "Question 1124101: Hi
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document.write( "a motorist travelled 1/3 of his journey 80km per hour for 4.5 hours. For the rest of the journey he took another 8 hours. On his return journey he took 12 hours to get home.\r
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document.write( "what was the distance of the whole journey.
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document.write( "What was his average speed on the return journey.\r
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document.write( "for the first part, I calculated the distance as follows:1/3x =80x4.5
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document.write( "x = 1080 km\r
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document.write( "for part two my calculation was 1080km ÷12=90km per hour.\r
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document.write( "is this correct.\r
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document.write( "thanks \n" );
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Algebra.Com's Answer #740474 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! a motorist travelled 1/3 of his journey 80km per hour for 4.5 hours. For the rest of the journey he took another 8 hours. On his return journey he took 12 hours to get home.\r \n" ); document.write( "\n" ); document.write( "what was the distance of the whole journey. \n" ); document.write( "d = distance of journey one-way \n" ); document.write( "d/3 = 80*4.5 = 360 km \n" ); document.write( "d = 1080 km \n" ); document.write( "------------------- \n" ); document.write( "What was his average speed on the return journey. \n" ); document.write( "Return speed = 1080 km/12 hr = 90 km/hr\r \n" ); document.write( "\n" ); document.write( "for the first part, I calculated the distance as follows:1/3x =80x4.5 \n" ); document.write( "x = 1080 km\r \n" ); document.write( "\n" ); document.write( "for part two my calculation was 1080km ÷12=90km per hour.\r \n" ); document.write( "\n" ); document.write( "is this correct. \n" ); document.write( "Correct. \n" ); document.write( " \n" ); document.write( " |