document.write( "Question 968314: Jenny's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Jenny \r
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\n" ); document.write( "\n" ); document.write( "$4.05
\n" ); document.write( " per pound, and type B coffee costs \r
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\n" ); document.write( "\n" ); document.write( "$5.45
\n" ); document.write( " per pound. This month's blend used three times as many pounds of type B coffee as type A, for a total cost of \r
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\n" ); document.write( "\n" ); document.write( "$652.80
\n" ); document.write( ". How many pounds of type A coffee were used?
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Algebra.Com's Answer #591720 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Jenny's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Jenny $4.05 per pound, and type B coffee costs $5.45 per pound. This month's blend used three times as many pounds of type B coffee as type A, for a total cost of $652.80
\n" ); document.write( ". How many pounds of type A coffee were used?
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\n" ); document.write( "Equations:
\n" ); document.write( "B = 3A
\n" ); document.write( "4.05A + 5.45B = 652.80
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\n" ); document.write( "Substitute for \"B\" and solve for \"A\"::
\n" ); document.write( "405A + 545*3A = 65280
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\n" ); document.write( "405A + 1635A = 65280
\n" ); document.write( "2040A = 65280
\n" ); document.write( "A = 32 lbs (amt. of A coffee used)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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