document.write( "Question 985215: Jerry had a doctor's appointment at 10:00 am. The doctor's office is located 16.2 miles away from Jerry's house. John got in the car at 9:30 am, drove with an average speed of 25.4 mph.
\n" ); document.write( "Jerry ended up being late for the appointment. How much faster should he have driven (in mph). \n" ); document.write( "

Algebra.Com's Answer #606043 by josgarithmetic(39617) $\"\"$ $\"About$

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document.write( "rate     time     distance\r\n" );
document.write( "25.4     t+x       16.2\r\n" );
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\n" ); document.write( "\n" ); document.write( "If t was expected time and x was the excess time, you have $\"t%2Bx=1%2F2\"$ .\r
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\n" ); document.write( "\n" ); document.write( "This system can be formed:
\n" ); document.write( " $\"system%28%2825.4%29%2A%28t%2Bx%29=16.2%2Ct%2Bx=1%2F2%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "Two linear equations in the variables, t and x;
\n" ); document.write( "both can be found. These as set with the equations, will be in hours (actually fractions of an hour). \n" ); document.write( "

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