document.write( "Question 602173: Hello could someone please help me with this equation, I am so stuck! I have tried to make a formula but it is not working. I tried (x*.2)+(y*.5)=25.30 but this formula does not include the 68 because I do not know where to put it. The equation is below.\r
\n" ); document.write( "\n" ); document.write( "Mike saves all his 50 cent & 20 cent coins. When he counts them he finds he has 68 coins amounting to $25.30. How many of each type of coin does he have? \n" ); document.write( "
Algebra.Com's Answer #380149 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
x 20 cent coins
\n" ); document.write( "y 50 cent coins
\n" ); document.write( "Total attended
\n" ); document.write( "1 x + 1 y = 68.00 .............1
\n" ); document.write( "
\n" ); document.write( "0.20 x 0.50 y = 25.30 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -0.50
\n" ); document.write( "Multiply (2) by 1.00
\n" ); document.write( "-0.50 x -0.50 y = -34.00
\n" ); document.write( "0.20 x + 0.50 y = 25.30
\n" ); document.write( "Add the two equations
\n" ); document.write( "-0.30 x = -8.70
\n" ); document.write( "/ -0.30
\n" ); document.write( "x = 29.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1.00 x + 1.00 y = 68.00
\n" ); document.write( "29.00 + 1.00 y = 68.00
\n" ); document.write( " 1.00 y = 68.00 -29.00
\n" ); document.write( " 1.00 y = 39.00
\n" ); document.write( " y = 39.00
\n" ); document.write( "29 20 cent coins
\n" ); document.write( "39 50 cent coins
\n" ); document.write( "m.ananth@hotmail.ca
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