document.write( "Question 1025709: Two containers of different capacities were used to fill a vat with 140 liters of liquid. One container had a capacity of 1 liter and the other had a capacity of 4 liters. Given that the contents of 50 containers were used to fill the vat, how many times was each container used? \n" ); document.write( "

Algebra.Com's Answer #641001 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Two containers of different capacities were used to fill a vat with 140 liters of liquid. One container had a capacity of 1 liter and the other had a capacity of 4 liters. Given that the contents of 50 containers were used to fill the vat, how many times was each container used?
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document.write( "The guiding system of equations is \r\n" );
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document.write( "x +  y =  50,   (1)\r\n" );
document.write( "x + 4y = 140.   (2)\r\n" );
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document.write( "Use substitution or elimination method to get the solution\r\n" );
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document.write( "x = 20, y = 30,\r\n" );
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document.write( "where x = how many times 1-liter container was used, and y = that of 4-liter container.\r\n" );
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