document.write( "Question 1201064: Using a system of equations in two variables, solve the following:\r
\n" ); document.write( "\n" ); document.write( "Al and Bev traveled from their apartment to a picnic 20mi away. Al traveled on his bike while Bev, who left later, took her car. Al's average rate was half of Bev's average rate. The trip took Al a half hr longer than Bev. What was Bev's average rate? \n" ); document.write( "

Algebra.Com's Answer #835314 by josgarithmetic(39618) $\"\"$ $\"About$

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\n" ); document.write( "Al and Bev traveled from their apartment to a picnic 20mi away. Al traveled on his bike while Bev, who left later, took her car. Al's average rate was half of Bev's average rate. The trip took Al a half hr longer than Bev. What was Bev's average rate?
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document.write( "                 SPEED        TIME in hour    DISTANCE\r\n" );
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document.write( "AL (bike)           r         20/r             20\r\n" );
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document.write( "BEV (car)          2r        20/(2r)           20\r\n" );
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document.write( "DIFFERENCE                   \r\n" );
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\n" ); document.write( "Can you understand how to solve with the displayed information?
\n" ); document.write( "Do you really need to use two variables instead of the one?\r
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\n" ); document.write( "\n" ); document.write( "r is 20, so 2r is 40 miles per hour.
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