document.write( "Question 473291: Hi tutors, here's a challenging 5th grade word problem which I truly have no idea to work it out.\r
\n" ); document.write( "\n" ); document.write( "William and Grace have $87. Grace and Siti have $115. William has 3/7 of Siti's amount. How much money does Grace have at first?\r
\n" ); document.write( "\n" ); document.write( "Please help. Thank you. \n" ); document.write( "
Algebra.Com's Answer #324566 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
William and Grace have $87. Grace and Siti have $115. William has 3/7 of Siti's amount. How much money does Grace have at first?
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\n" ); document.write( "W + G = 87
\n" ); document.write( "S + G = 115
\n" ); document.write( "W = (3/7)S
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\n" ); document.write( "I'm not sure how 5th graders solve these but
\n" ); document.write( "this is one way to do it.
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\n" ); document.write( "Substitute for W to get 2 equations in S and G
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\n" ); document.write( "(3/7)S + G = 87
\n" ); document.write( "S + G = 115
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\n" ); document.write( "Subtract and solve for \"S\":
\n" ); document.write( "(4/7)S = 28
\n" ); document.write( "---
\n" ); document.write( "S = (7/4)28
\n" ); document.write( "S = 7*7
\n" ); document.write( "Siti has has $49
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\n" ); document.write( "Solve for \"G\":
\n" ); document.write( "S + G = 115
\n" ); document.write( "49 + G = 115
\n" ); document.write( "Grace has $66
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\n" ); document.write( "Solve for W:
\n" ); document.write( "W = (3/7)S
\n" ); document.write( "W = (3/7)49 = 3*7 = $21
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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