document.write( "Question 938737: Tickets to the museum exhibit cost $5.50 for adults and $3 for children. Assume 110 people attended and the museum sold $487.50'worth of tickets. How many adults attended? How many children attended?
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Algebra.Com's Answer #571921 by Stitch(470)\"\" \"About 
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Let A = Number of Adults
\n" ); document.write( "Let C = Number of Children
\n" ); document.write( "Since we have two unknowns, we need two equations.
\n" ); document.write( "Equation 1: \"A+%2B+C+=+110\"
\n" ); document.write( "Equation 2: \"5.5%2AA+%2B+3C+=+487.5\"
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\n" ); document.write( "Solve equation 1 for one of the variables.
\n" ); document.write( "Equation 1: \"A+%2B+C+=+110\"
\n" ); document.write( "\"A+=+110+-+C\"
\n" ); document.write( "Now plug (110 - C) into equation 2 for A
\n" ); document.write( "Equation 2: \"5.5%2AA+%2B+3C+=+487.5\"
\n" ); document.write( "\"5.5%2A%28110+-+C%29+%2B+3C+=+487.5\"
\n" ); document.write( "Multiply the 5.5 through
\n" ); document.write( "\"605+-+5.5C+%2B+3C+=+487.5\"
\n" ); document.write( "Combine like terms.
\n" ); document.write( "\"605+-+2.5C+=+487.5\"
\n" ); document.write( "Subtract 605 from both sides.
\n" ); document.write( "\"-2.5C+=+-117.5\"
\n" ); document.write( "Divide both sides by -2.5
\n" ); document.write( "Notice that the two negative signs cancel out.
\n" ); document.write( "\"highlight%28C+=+47%29\"
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\n" ); document.write( "Now Plug 47 in for C and solve for A
\n" ); document.write( "\"A+=+110+-+C\"
\n" ); document.write( "\"A+=+110+-+%2847%29\"
\n" ); document.write( "\"highlight_green%28A+=+63%29\"
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