Question: Five mutually exclusive alternatives are being considered for providing a sewage-treatment facility. The annual equivalent costs and estimated benefits of the alternatives are as follows
Five mutually exclusive alternatives are being considered for providing a sewage-treatment facility. The annual equivalent costs and estimated benefits of the alternatives are as follows
| Alternative | cost | benefit |
| A | 1050 | 1110 |
| B | 900 | 810 |
| C | 1230 | 1390 |
| D | 1350 | 1500 |
| E | 990 | 1140 |
Which plan, if any, should be adopted if the Sewage Authority wishes to invest if, and only if, the B-C ratio is at least 1.0.?
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