Standby power for pumps at water distribution booster stations can be provided by either gasoline-or diesel-powered engines. The estimates for the gasoline engines are as follows:
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If the incremental PW-based ROR equation associated with (Diesel – Gasoline) is
0 = – 40,000 + 11,000(P?A,?i*,15) + 16,000(P?F,?i*,15),
the first cost of the diesel engine is closest to: (choose one)
(a) –190,000
(b) –110,000
(c) –60,000
(d) – 40,000
Diesel - Gasoline = -40,000
Diesel - (-150,000) = -40,000
Diesel = -190,000
Answer is (a) –190,000
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