document.write( "Question 1004760: If a student spent $68 dollars in cards. A stack of cards A are $4 each and a stack of B cards are $7 each. If the student bought 11 stack of cards, how many stacks of A and B were purchased? \n" ); document.write( "
Algebra.Com's Answer #622122 by fractalier(6550)\"\" \"About 
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From the facts we have
\n" ); document.write( "4A + 7B = 68 and
\n" ); document.write( "A + B = 11
\n" ); document.write( "Multiply the bottom one by 4 and subtract from the top one and get
\n" ); document.write( "4A + 7B = 68
\n" ); document.write( "-(4A + 4B = 44)
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\n" ); document.write( "3B = 24
\n" ); document.write( "B = 8 stacks of B
\n" ); document.write( "A = 3 stacks of A
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