Question 825227
Wei has three types of shares: 
A, B and C. A shares pay 8%, B shares pay 6% and C shares pay 11% dividends.
Wei has twice as much invested in B shares as A shares, 
and has 50000 invested altogether. 
The yearly return from the share dividends is $4850. 
How much is invested in each type of share.
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Equations:
Quantity:: a  +   b  +   c = 50000
Interest::8a  +  6b  + 11c = 485000
Quantity:: b = 2a
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a + b + c = 5000
8a+6b +11c = 485000
2a-b  + 0  = 0
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I used my TI-84 to get:
a = $5000
b = $10,000
c = $35,000
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Cheers,
Stan H.
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