document.write( "Question 919663: Once a year Julian travels from his home 'A' to the stadium 'D' a total distance of 96km.For the first part of his journey he was given a lift from A to B which are 40km apart.He then walked for 1 hour at a speed of ykm/h to C.Then he rode a bicycle for 2 hours at a speed which is three times his walking speed to D.
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document.write( "1. Write down an expression for the cycling speedin terms of y, and then find y in km/h.
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document.write( "2. Calculate his average speed in km/h for the journey BCD. \n" );
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Algebra.Com's Answer #557882 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Once a year Julian travels from his home 'A' to the stadium 'D' a total distance of 96km.For the first part of his journey he was given a lift from A to B which are 40km apart.He then walked for 1 hour at a speed of ykm/h to C.Then he rode a bicycle for 2 hours at a speed which is three times his walking speed to D. \n" ); document.write( "1. Write down an expression for the cycling speedin terms of y, and then find y in km/h. \n" ); document.write( "2. Calculate his average speed in km/h for the journey BCD.\r \n" ); document.write( "\n" ); document.write( "Once a year Julian travels from his home 'A' to the stadium 'D' a total distance of 96km.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "from A to B which are 40km apart.\r \n" ); document.write( "\n" ); document.write( "He then walked for 1 hour at a speed of y km/h to C. \n" ); document.write( "distance = y km\r \n" ); document.write( "\n" ); document.write( "Then he rode a bicycle for 2 hours at a speed which is three times his walking speed to D. at 3ykm/h\r \n" ); document.write( "\n" ); document.write( "3y*2 = 6y km\r \n" ); document.write( "\n" ); document.write( "40 + y+6y=96\r \n" ); document.write( "\n" ); document.write( "7y=56\r \n" ); document.write( "\n" ); document.write( "y=8 walking speed\r \n" ); document.write( "\n" ); document.write( "3y =24 km/h\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2. Calculate his average speed in km/h for the journey BCD.\r \n" ); document.write( "\n" ); document.write( "y+6y/3 \n" ); document.write( "7y/3 \n" ); document.write( " |