A bondholder has six bonds. When she sells a bond, the expected price (in millions of dollars) for each one is given in table. For instance, if bond 1 is sold in year 1, she receives $15 million, but if it is sold in year 2, she receives $20 million. For business requirements, she must sell at least $20 million of bonds during year 1, at least $30 million worth during year 2, and at least $35 million worth during year 3. Set up an IP that she can use to determine how to maximize total revenue from bonds sold during the next three years.

	Sold in
Bond	year 1	year 2	year 3
1	15	20	24
2	16	18	21
3	22	30	36
4	10	20	30
5	17	19	22
6	19	25	29