document.write( "Question 60260This question is from textbook Pre-Algebra
\n" ); document.write( ": Guppies cost 20 cents less than swordtails. Three guppies and 4 swordtails cost $2.83. How much do Guppies cost? \n" ); document.write( "
Algebra.Com's Answer #41366 by funmath(2933)\"\" \"About 
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Guppies cost 20 cents less than swordtails. Three guppies and 4 swordtails cost $2.83. How much do Guppies cost?
\n" ); document.write( "Let the price of guppies be: x
\n" ); document.write( "Then if guppies are 20 cents less than swordtails, swordtails cost 20 cents more.
\n" ); document.write( "Let the price of swordtails be: x+20
\n" ); document.write( "To avoid decimals let the total cost be 283 cents.
\n" ); document.write( "3x+4(x+20)=283
\n" ); document.write( "4x+3x+80=283
\n" ); document.write( "7x+80=283
\n" ); document.write( "7x+80-80=283-80
\n" ); document.write( "7x=203
\n" ); document.write( "7x/7=203/7
\n" ); document.write( "x=29 cents
\n" ); document.write( "The guppies cost 29 cents or $.29, whichever you prefer.
\n" ); document.write( "For fun find out that the swordtails cost.......................................................................................................................49 cents.
\n" ); document.write( "Check to see if at that price 3 guppies and 4 swortails really do cost $2.83.
\n" ); document.write( "Happy Calculating!!! \n" ); document.write( "
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