document.write( "Question 179737: In one week a gas station sold 50000L of gas and the net value of the sales was $29000.00. The prices during the week were 61.9c/L and then a gas war forced the price down to 54.9c/L. How many L were sold at each price? \n" ); document.write( "

Algebra.Com's Answer #134648 by Mathtut(3670) $\"\"$ $\"About$

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lets call the number of liters sold of 61.9c and 54.9c gas, s and f respectively
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\n" ); document.write( "s+f=50000...........eq 1
\n" ); document.write( ".619s+.549f=29000...eq 2
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\n" ); document.write( "lets rewrite eq 1 to s=50000-f and plug that value into eq 2
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\n" ); document.write( ".619(50000-f)+.549f=29000
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\n" ); document.write( "30950-.619f+.549f=29000
\n" ); document.write( ":
\n" ); document.write( "-.07f=-1950
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\n" ); document.write( " $\"highlight%28f=27857.14%29\"$ liters of 54.9 c gas
\n" ); document.write( ":
\n" ); document.write( " $\"highlight%28s=50000-27857.14=22142.86%29\"$ liters of 61.9 c gas \n" ); document.write( "

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