nvesting: Lesser-Known Stocks   The following question is based on the following information about the stocks of Whitestone REIT, HCC Insurance Holdings, Inc., and SanDisk Corporation.†   Price ($) Dividend Yield (%) WSR (WSR Whitestone REIT) 16 7 HCC (HCC Insurance Holdings, Inc.) 56 2 SNDK (SanDisk Corporation) 80 2 You invested a total of $14,400 in shares of the three stocks at the given prices, and expected to earn $328 in annual dividends. If you purchased a total of 250 shares, how many shares of each stock did you purchase?   having trouble solving  i have set up as   x+y+z=250 16x+56y+80z=14,400 .7(16x)+.2(56y)+.2(80z)=248

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Investing: Lesser-Known Stocks   The following question is based on the following information about the stocks of Whitestone REIT, HCC Insurance Holdings, Inc., and SanDisk Corporation.†

  Price
($)
Dividend Yield
(%)
WSR
(WSR Whitestone REIT)
16 7
HCC
(HCC Insurance Holdings, Inc.)
56 2
SNDK
(SanDisk Corporation)
80 2
You invested a total of $14,400 in shares of the three stocks at the given prices, and expected to earn $328 in annual dividends. If you purchased a total of 250 shares, how many shares of each stock did you purchase?
 
having trouble solving 
i have set up as
 
x+y+z=250
16x+56y+80z=14,400
.7(16x)+.2(56y)+.2(80z)=248
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