document.write( "Question 629810: A company orders two types of parts , brass and steel . One shipment contains 3 brass and 10 steel parts and costs $48. A second shipment contains 7 brass and 4 steel parts and costs $54. Find the cost of each type of part . \n" ); document.write( "
Algebra.Com's Answer #396511 by stanbon(75887)\"\" \"About 
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A company orders two types of parts , brass and steel . One shipment contains 3 brass and 10 steel parts and costs $48. A second shipment contains 7 brass and 4 steel parts and costs $54. Find the cost of each type of part .
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\n" ); document.write( "Equations:
\n" ); document.write( "3b + 10s = 48 dollars
\n" ); document.write( "7b + 4s = 54 dollars
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\n" ); document.write( "Multiply thru 1st by 7; thru 2nd by 3
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\n" ); document.write( "21b + 70s = 7*48
\n" ); document.write( "21b + 12s = 3*54
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\n" ); document.write( "Subtract and solve for \"s\":
\n" ); document.write( "58s = 174
\n" ); document.write( "s = $3 (price of one steel part)
\n" ); document.write( "----
\n" ); document.write( "Solve for \"b\":
\n" ); document.write( "3b + 10*s = 48
\n" ); document.write( "3b + 30 = 48
\n" ); document.write( "b = $6 (price of one brass part)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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