document.write( "Question 818900: Josh's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Josh per pound, and type B coffee costs per pound. This month, Josh made pounds of the blend, for a total cost of . How many pounds of type A coffee did he use? \n" ); document.write( "
Algebra.Com's Answer #492851 by josgarithmetic(39618)\"\" \"About 
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\n" ); document.write( "Josh's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Josh L per pound, and type B coffee costs H per pound. This month, Josh made M pounds of the blend, for a total cost of c (in whatever money units). How many pounds of type A coffee did he use?\r
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\n" ); document.write( "\n" ); document.write( "Accounting for pounds of the coffee blend, let u = pounds of type A and let v = pounds of type B, \"u%2Bv=M\";\r
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\n" ); document.write( "\n" ); document.write( "Accounting for money or cost for the M pounds of the blend, \"Lu%2BHv=c\"\r
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\n" ); document.write( "\n" ); document.write( "The question asks only how much type A coffee were used. Try solving either equation for v, and substitute this formula into the other equation and solve it for u. . All other variables are assumed known. Solve this system for u and v:
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\n" ); document.write( "Lu+Hv=c
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\n" ); document.write( "u+v=M
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\n" ); document.write( "\n" ); document.write( "You could also solve for BOTH u and v if you wanted.
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