document.write( "Question 481106: If Jose buys 15 apples and 20 oranges, his Php 500 is just enough. But if she buys 10 apples and 26 oranges, he will have Php 40 more for snacks. Find the cost of the apple. \n" ); document.write( "

Algebra.Com's Answer #329458 by mananth(16946) $\"\"$ $\"About$

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Apples x unit price
\n" ); document.write( "Oranges y unit price
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\n" ); document.write( "15 x + 20 y = 500 .............1
\n" ); document.write( "10 x + 26 y = 460 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -26
\n" ); document.write( "Multiply (2) by 20
\n" ); document.write( "-390 x -520 y = -13000
\n" ); document.write( "200 x + 520 y = 9200
\n" ); document.write( "Add the two equations
\n" ); document.write( "-190 x = -3800
\n" ); document.write( "/ -190
\n" ); document.write( "x = 20
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "15 x + 20 y = 500
\n" ); document.write( "300 + 20 y = 500
\n" ); document.write( " 20 y = 500 -300
\n" ); document.write( " 20 y = 200
\n" ); document.write( " y = 10
\n" ); document.write( "Apples 20 unit price
\n" ); document.write( "Oranges 10 unit price
\n" ); document.write( "m.ananth@hotmail.ca
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