document.write( "Question 25976: 2 oranges and 5 apples cost $2.50 3 oranges and 4 apples cost $2.70 find the cost of an orange and an apple \n" ); document.write( "
Algebra.Com's Answer #13957 by Paul(988)\"\" \"About 
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LEt the cost of the organges be x
\n" ); document.write( "Let the cost of apples be y
\n" ); document.write( "Now:
\n" ); document.write( "2x+5y=2.50 --> SOlve for x
\n" ); document.write( "2x=2.50-5y
\n" ); document.write( "x=1.25-2.5y (subsitution)\r
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\n" ); document.write( "\n" ); document.write( "Now:
\n" ); document.write( "3x+4y=2.70
\n" ); document.write( "Subsitute for x
\n" ); document.write( "3(1.25-2.5y)+4y=2.70
\n" ); document.write( "3.75-7.5y+4y=2.70
\n" ); document.write( "-3.5y=-1.05
\n" ); document.write( "y=0.30
\n" ); document.write( "x=1.25-2.5(0.30)
\n" ); document.write( "x=0.50\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Hence a cost of an organge is $0.50 and a cost of an apple is $0.30.
\n" ); document.write( "Paul.\r
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