Liwayway High School is planning to install solar panels to provide some of the electricity for its groundwater desalting facilty. The project would be done in two phases. The first phase will cost P400 million in year 1 and P500 million in year 2. This investment will result in energy savings (phase 2) of P54,000,000 in year 3, P54,600,000 in year 4, and amounts increasing by P600,000 each year through year 10. Let i = 10% per year. (a) What is the future worth of the savings? (b) Is the cost of the solar project justified by the savings? (Hint: Calculate the difference between savings and cost).

Essentials Of Investments
11th Edition
ISBN:9781260013924
Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
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Liwayway High School is planning to install solar panels to provide some of the electricity for its groundwater desalting facilty. The project would be done in two phases. The first phase will cost P400 million in year 1 and P500 million in year 2. This investment will result in energy savings (phase 2) of P54,000,000 in year 3, P54,600,000 in year 4, and amounts increasing by P600,000 each year through year 10. Let i = 10% per year.
(a) What is the future worth of the savings?
(b) Is the cost of the solar project justified by the savings? (Hint: Calculate the difference between savings and cost).

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