document.write( "Question 633277: Twice last month, Alice rented a car from the same company. She was charged a daily fee, plus an additional charge per mile driven. The first trip lasted 4 days, she drove 380 miles, and the rental cost her $180.20. On her second trip she drove 625 miles in 5 days, and paid $253.75 for the rental. Find the daily fee and the mileage charge. \n" ); document.write( "
Algebra.Com's Answer #398816 by mananth(16946)\"\" \"About 
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x Rate per mile
\n" ); document.write( "y daily charge
\n" ); document.write( "Total memberships
\n" ); document.write( "180 x + 4 y = 180.20 .............1
\n" ); document.write( "
\n" ); document.write( "625 x + 5 y = 253.75 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -5
\n" ); document.write( "Multiply (2) by 4
\n" ); document.write( "-900 x -20 y = -901
\n" ); document.write( "2500 x + 20 y = 1015
\n" ); document.write( "Add the two equations
\n" ); document.write( "1600 x = 114
\n" ); document.write( "/ 1600
\n" ); document.write( "x = 0.07
\n" ); document.write( "0.07 *100 = 7 cents/mile
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "180 x + 4 y = 180
\n" ); document.write( "13 + 4 y = 180
\n" ); document.write( " 4 y = 180 -13
\n" ); document.write( " 4 y = 167
\n" ); document.write( " y = 42\r
\n" ); document.write( "\n" ); document.write( "7 cents per mile & $42 per day
\n" ); document.write( " \n" ); document.write( "
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