document.write( "Question 167517: Tickets for adults are 5.50 and tickets for children are 3.50. How many of each kind of ticket was purchased if 21 tickets were bought for 83.50? \n" ); document.write( "
Algebra.Com's Answer #123411 by checkley77(12844)\"\" \"About 
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5.5X+3.50(21-X)=83.50
\n" ); document.write( "5.5X+73.5-3.50X=83.50
\n" ); document.write( "2X=83.50-73.50
\n" ); document.write( "2X=10
\n" ); document.write( "X=10/2
\n" ); document.write( "X=5 ADULT TICKETS WERE SOLD.
\n" ); document.write( "21-5=16 CHILDREN TICKETS WERE SOLD.
\n" ); document.write( "PROOF:
\n" ); document.write( "5.50*5+3.50*16=83.50
\n" ); document.write( "27.50+56.00=83.50
\n" ); document.write( "83.50=83.50
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