The Tennessee Department of Transportation (TDOT) is considering six mutually exclusive projects to reduce number of accidents on state highways. Effectiveness is often considered as a good measure any safety programs on state highways and it may be defined based on the accident reduction and highway miles traveled. A consulting firm has complied the following cost and effectiveness for all six plans.

Plan	PW of costs	Effectiveness
1	$ 3.0 M	5
2	4.5M	12
3	8.2M	14
4	9.6M	17
5	12.0M	21
6	15.0M	25

If weights of 0.6 and 0.4 are assigned to PW of costs and effectiveness respectively, determine the plan TDOT should implement.