document.write( "Question 1016510: A bookstore sells paperback books for $5.95 each and hardcover books for $19.75 each. Last Tuesday, 86 books were sold for a total of $939.50. How many of each paperback and hardcover books were sold? \n" ); document.write( "
Algebra.Com's Answer #633149 by macston(5194)\"\" \"About 
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\n" ); document.write( "P=number of paperbacks; H=number of hardcover books
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\n" ); document.write( "P+H=86
\n" ); document.write( "P=86-H . Use this to substitute for P below.
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\n" ); document.write( "$5.95P+$19.75H=$939.50 . Substitute for P from above.
\n" ); document.write( "$5.95(86-H)=$19.75H=$939.50
\n" ); document.write( "$511.70-$5.95H+$19.75H=$939.50
\n" ); document.write( "$13.80H=$427.80
\n" ); document.write( "H=31
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\n" ); document.write( "ANSWER 1: 31 hardcover books were sold.
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\n" ); document.write( "P=86-H=86-31=55
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\n" ); document.write( "ANSWER 2: 55 paperback books were sold.
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\n" ); document.write( "CHECK:
\n" ); document.write( "$5.95P+$19.75H=$939.50
\n" ); document.write( "$5.95(55)+$19.75(31)=$939.50
\n" ); document.write( "$327.25+$612.25=$939.50
\n" ); document.write( "$939.50=$939.50
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