document.write( "Question 170344This question is from textbook Introductory Algebra
\n" ); document.write( ": Solve the problem. Andy has 8 coins made up of quarters and half dollars, and their total value is $2.50. How many quarters does he have? \n" ); document.write( "
Algebra.Com's Answer #125731 by checkley77(12844)\"\" \"About 
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Q+H=8
\n" ); document.write( "H=8-Q
\n" ); document.write( ".25Q+.50H=2.50
\n" ); document.write( ".25Q+.50(8-Q)=2.50
\n" ); document.write( ".25Q+4-.50Q=2.50
\n" ); document.write( "-.25Q=2.50-4
\n" ); document.write( "-.25Q=-1.50
\n" ); document.write( "Q=-1.50/-.25
\n" ); document.write( "Q=6 QUARTERS.
\n" ); document.write( "8-6=2 HALF DOLLARS.
\n" ); document.write( "PROOF:
\n" ); document.write( ".25*6+.50*2=2.50
\n" ); document.write( "1.50+1.00=2.50
\n" ); document.write( "2.50=2.50\r
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