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please do it in 40 minutes please urgently... I'll give you up thumb definitely

please do Q.4 only....no need to do only Q.3

3. (15 Marks) The provincial department of transportation is considering investing in a provincial highway. Five mutually exclusive alternatives were identified. The present worth of their expected costs and benefits were calculated, and the data are summarized in the following table: Alternative Present worth of benefits, $ million Present worth of costs, $ million A B C D E 3 10 13 18 25 1 5 9 14 19 TO Calculate the BCR for each alternative, the incremental BCR and identify the best alternative. 4. (15 Marks) A new public arena costs $60 million. The largest portion of this amount, $40 million, is for the land acquisition and major earthworks with infinite service life. The remaining $20 million is for the arena itself, which will be in operation for 20 years. Maintenance of the arena requires $2 million per year. Assuming a 5% MARR, what annual benefit is required for the benefit cost ratio to be greater than 1