document.write( "Question 414851: How many pounds of an $83 per pound substance must be mixed with an $11 per pound substance to get 240 lbs of an alloy which will cost $28 per pound? Round to the nearest pound. \n" ); document.write( "

Algebra.Com's Answer #290939 by stanbon(75887) $\"\"$ $\"About$

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How many pounds of an $83 per pound substance must be mixed with an $11 per pound substance to get 240 lbs of an alloy which will cost $28 per pound? Round to the nearest pound.
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\n" ); document.write( "Equation:
\n" ); document.write( "active + active = active
\n" ); document.write( "83x + 11(240-x) = 28*240
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\n" ); document.write( "83x + 11*240 - 11x = 28*240
\n" ); document.write( "72x = 17*240
\n" ); document.write( "x = 56 2/3 lb. (amt. of $83 substance needed)
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\n" ); document.write( "240-x = 183 1/3 lb (amt. of $11 substance needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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