document.write( "Question 766464: A store sells cashews for $4.40/lb and peanuts for $1.20/lb. How many lb of each can be bought to get exactly 3lb for $6. If possible please solve using system of equations. \n" ); document.write( "

Algebra.Com's Answer #466937 by subudear(62) $\"\"$ $\"About$

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This can be solved using system of equations.\r
\n" ); document.write( "\n" ); document.write( "Let buy x lb of cashew and y lb of peanuts.\r
\n" ); document.write( "\n" ); document.write( "x + y = 31 .....(1)\r
\n" ); document.write( "\n" ); document.write( "Cost of cashew and peanuts will be \r
\n" ); document.write( "\n" ); document.write( "4.4x + 1.2y = 6 ......(1)\r
\n" ); document.write( "\n" ); document.write( "Solving these equation will provide the solution.\r
\n" ); document.write( "\n" ); document.write( "lets replace y = 31 - x from equation (1) into equation (2)
\n" ); document.write( "4.4x + 1.2 (31 - x) = 6
\n" ); document.write( "4.4x + 37.2 - 1.2x = 6
\n" ); document.write( "3.2x = 31.2
\n" ); document.write( "x = 9.75\r
\n" ); document.write( "\n" ); document.write( "substituting the value sin equation (1) will give
\n" ); document.write( "y = 31 - 9.75 = 21.25\r
\n" ); document.write( "\n" ); document.write( "Cashews weight will be 9.75 lb
\n" ); document.write( "peanuts weight will be 21.25 lb \n" ); document.write( "

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