SOLUTION: 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 sch
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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? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 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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3s + 2d = 4010
2s + 5d = 4800
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Modify for elimination:
15s + 10d = 5*4010
4s + 10d = 2*4800
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Subtract and solve for "s"::
11s = 10450
s = $950 (cost of one son's meals)
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Solve for "d"
2s + 5d = 4800
1900 + 5d = 4800
5d = 2900
d = $580 (cost of one daughter's meals)
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Cheers,
Stan H.
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