SOLUTION: six small marbles and four large have a combines weight of 30 g, whilst seven small marbles and two large marbles have weight of 23 g. FInd the weight of a large marble.

Question 826113: six small marbles and four large have a combines weight of 30 g, whilst seven small marbles and two large marbles have weight of 23 g. FInd the weight of a large marble.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
six small marbles and four large have a combines weight of 30 g, whilst seven small marbles and two large marbles have weight of 23 g. FInd the weight of a large marble.
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Equations:
6s + 4L = 30g
7s + 2L = 23g
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Modify::
42s + 28L = 210g
42s + 12L = 138g
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Subtract and solve for "L"::
16L = 72
L = 4.5 grams (weight of a large marble)
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Cheers,
Stan H.
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