document.write( "Question 1058945:
\n" ); document.write( "At first a runner jogs at 5 mph and then jogs at 8 mph traveling 7 miles in 1.1 hours. How long does the runner jog at each speed. (Hint: Let t represent the amount of time the runner jogs at 5 mph. Then 1.1 - t represents the amount of time the runner jogs at 8 mph.) Set up an equation for distance at 5 mph + distance at 8 mph = 7miles. \n" ); document.write( "

Algebra.Com's Answer #674022 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
Make a data table and then use RT=D basic principle to form the necessary equations.\r
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document.write( "           SPEED       TIME        DISTANCE\r\n" );
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document.write( "SLOW         5         \r\n" );
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document.write( "FAST         8\r\n" );
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document.write( "Total                  1.1           7\r\n" );
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\n" ); document.write( "\n" ); document.write( "You need to fill in the missing cells of the data table.
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document.write( "           SPEED       TIME        DISTANCE\r\n" );
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document.write( "SLOW         5                \r\n" );
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document.write( "FAST         8          x            8x\r\n" );
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document.write( "Total                  1.1           7\r\n" );
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\n" ); document.write( "The additional variable, x for the FAST time is the only way I can see to do this. You have two sums in the variables, t and x. They are LINEAR equations forming a system.\r
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\n" ); document.write( "\n" ); document.write( " $\"system%28t%2Bx=1.1%2C5t%2B8x=7%29\"$ , and you should be able to solve this system. \n" ); document.write( "

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