document.write( "Question 1031916: Mr. Kingsben and Mr. Kenneth sent their sons to the same high school and their daughters to the same primary school. Mr. Kingsben paid 4010 for his three sons and two daughters school meal. Mr. Kenneth paid 4800 for his two sons and five daughters school meal. How much is a son's school meal and a daughter's school meal? \n" ); document.write( "

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Mr. Kingsben and Mr. Kenneth sent their sons to the same high school and their daughters to the same primary school. Mr. Kingsben paid 4010 for his three sons and two daughters school meal. Mr. Kenneth paid 4800 for his two sons and five daughters school meal. How much is a son's school meal and a daughter's school meal?
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\n" ); document.write( "3s + 2d = 4010
\n" ); document.write( "2s + 5d = 4800
\n" ); document.write( "-----------------------
\n" ); document.write( "Modify for elimination:
\n" ); document.write( "15s + 10d = 5*4010
\n" ); document.write( "4s + 10d = 2*4800
\n" ); document.write( "---------
\n" ); document.write( "Subtract and solve for \"s\"::
\n" ); document.write( "11s = 10450
\n" ); document.write( "s = $950 (cost of one son's meals)
\n" ); document.write( "------
\n" ); document.write( "Solve for \"d\"
\n" ); document.write( "2s + 5d = 4800
\n" ); document.write( "1900 + 5d = 4800
\n" ); document.write( "5d = 2900
\n" ); document.write( "d = $580 (cost of one daughter's meals)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "------------ \n" ); document.write( "

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