document.write( "Question 178493: The cost of 12 oranges and 7 apples is $5.36. 8 oranges and 5 apples cost $3.68. what is the cost of each orange? \n" ); document.write( "
Algebra.Com's Answer #133449 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
The cost of 12 oranges and 7 apples is $5.36. 8 oranges and 5 apples cost $3.68. what is the cost of each orange?
\n" ); document.write( "------------------
\n" ); document.write( "Value Equation: 12R + 7A = 536 cents
\n" ); document.write( "Value Equation: 8R + 5A = 368 cents
\n" ); document.write( "------------------------------------
\n" ); document.write( "Multiply thru the 1st equation by 2; Multiply thru the 2nd equation by 3:
\n" ); document.write( "24R + 14A = 1072
\n" ); document.write( "24R + 15A = 1104
\n" ); document.write( "-----------------------
\n" ); document.write( "Subtract 1st from 2nd to get:
\n" ); document.write( "A = 32 (price of an apple)
\n" ); document.write( "----------
\n" ); document.write( "Substitute to solve for \"R\":
\n" ); document.write( "8R + 5*32 = 368
\n" ); document.write( "8R + 160 = 368
\n" ); document.write( "8R = 208
\n" ); document.write( "R = 26 (price of an orange)
\n" ); document.write( "=================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
\n" );