**Investment Linear Programming Problem**

You now have
$1000. The following investments are available to you during the next three
years:
- INVESTMENT A. Every dollar invested now yields $0.20 a year from now and
$1.25 three years from now.
- INVESTMENT B. Every dollar invested now yields $0.10 a year from now and
$1.40 two years from now.
- INVESTMENT C. Every dollar invested a year from now yields $ 1.60 three
years from now.

During each year uninvested cash can be placed in
money market funds, which yield 8% interest per year. At most 30% of the total
dollar amount invested can be in A, at least 25% in B, and at most 40% in
C.