document.write( "Question 1043784: Not sure how to put this in an equation form.\r
\n" ); document.write( "\n" ); document.write( "The sum of Sharon's age an John's age is 70. John is 4 times as old as Sharon.
\n" ); document.write( "If you let s=Sharon age on the x axis and j=johns age on the y axis then the problem can be represented by a system of equations.\r
\n" ); document.write( "\n" ); document.write( "I don't really need help with the equations, just with getting the word problem into the equation. Thank you!
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Algebra.Com's Answer #658948 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
I just have to end up with \"+j+=+f%28s%29+\"
\n" ); document.write( "-------------------
\n" ); document.write( "Let \"+j+\" = John's present age
\n" ); document.write( "Let \"+s+\" = Sharon's present age
\n" ); document.write( "-----------------------------
\n" ); document.write( "(1) \"+s+%2B+j+=+70+\"
\n" ); document.write( "(2) \"+j+=+4s+\"
\n" ); document.write( "-----------------
\n" ); document.write( "(1) \"+j+=+-s+%2B+70+\"
\n" ); document.write( "-----------------
\n" ); document.write( "Substitute (2) into (1)
\n" ); document.write( "(1) \"+s+%2B+4s+=+70+\"
\n" ); document.write( "(1) \"+5s+=+70+\"
\n" ); document.write( "(1) \"+s+=+14+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+j+=+4s+\"
\n" ); document.write( "(2) \"+j+=+4%2A14+\"
\n" ); document.write( "(2) \"+j+=+56+\"
\n" ); document.write( "---------------
\n" ); document.write( "The solution is ( 14,56 )
\n" ); document.write( "The system of equations is:
\n" ); document.write( "(1) \"+j+=+-s+%2B+70+\"
\n" ); document.write( "(2) \"+j+=+4s+\"
\n" ); document.write( "------------------------
\n" ); document.write( "Here is the plot:
\n" ); document.write( "\"+graph%28+400%2C+400%2C+-10%2C+100%2C+-10%2C+100%2C+-x+%2B+70%2C+4x+%29+\"
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