document.write( "Question 951431: At the local grocery store, apples are $1.20 per pound and oranges are $1.80 per pound. If the grocer wants to offer a 1.55-pound bag of mixed fruit for $1.62 per pound, how many pounds of apples must he use? \n" ); document.write( "
Algebra.Com's Answer #581074 by ankor@dixie-net.com(22740)\"\" \"About 
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At the local grocery store, apples are $1.20 per pound and oranges are $1.80 per pound.
\n" ); document.write( " If the grocer wants to offer a 1.55-pound bag of mixed fruit for $1.62 per pound, how many pounds of apples must he use?
\n" ); document.write( ":
\n" ); document.write( "Let a = pounds of apple required
\n" ); document.write( "let r = pounds of oranges
\n" ); document.write( ":
\n" ); document.write( "a + r = 1.55
\n" ); document.write( "r = (1.55-a); use this form for substitution
\n" ); document.write( ":
\n" ); document.write( "1.20a + 1.80r = 1.62(1.55)
\n" ); document.write( "replace r with (1.55-a)
\n" ); document.write( "1.20a + 1.80(1.55-a) = 1.62(1.55)
\n" ); document.write( "1.20a + 2.79 - 1.80a = 2.511
\n" ); document.write( "1.20a - 1.80a = 2.511 - 2.79
\n" ); document.write( "-.60a = -.279
\n" ); document.write( "a = -.279/-.60
\n" ); document.write( "a = +.465 lb of apples required
\n" ); document.write( ":
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\n" ); document.write( "To check this find the amt of oranges: 1.55-.465 = 1.085 lb of organges
\n" ); document.write( "1.2(.465 + 1.8(1.085) = 1.62(1.55)
\n" ); document.write( ".558 + 1.953 = 2.511 \n" ); document.write( "
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