document.write( "Question 1143107: a car traveling 60 km/h and return at 80km/h, talking a total journey of 5hr:30min for the total journey. how manykilometres does it travel altogether? \n" ); document.write( "

Algebra.Com's Answer #763876 by ikleyn(52808) $\"\"$ $\"About$

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document.write( "Let  d  be one way distance (in kilometers).\r\n" );
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document.write( "Then the time to travel \"to there\"  is   hours, while the time travel back is    hours.\r\n" );
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document.write( "The total time is 5 hours and 30 minutes, or    hours =  hours.\r\n" );
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document.write( "It gives you the \"time\" equation\r\n" );
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document.write( "     +  =    hours.\r\n" );
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document.write( "To solve the equation, multiply both sides by 240. You will get\r\n" );
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document.write( "    4d + 3d = 1320,\r\n" );
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document.write( "    7d       = 1320\r\n" );
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document.write( "     d       = 1320/7 = 188.57 km.\r\n" );
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document.write( "The two ways distance is  2*188.57 = 377.14 kilometers.    ANSWER\r\n" );
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document.write( "CHECK.   +  = 5.5 hours.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "Using \"time\" equation is the STANDARD method of solving such problems.\r
\n" ); document.write( "\n" ); document.write( "From this lesson, learn on how to write, how to use and how to solve a \"time\" equation.\r
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\n" ); document.write( "\n" ); document.write( "To see many other similar solved problems, look into the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Had a car move faster it would arrive sooner\r
\n" ); document.write( "\n" ); document.write( "    - How far do you live from school? \r
\n" ); document.write( "\n" ); document.write( "    - Earthquake waves \r
\n" ); document.write( "\n" ); document.write( "    - Time equation: HOW TO use, HOW TO write and HOW TO solve it \r
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