GSN is working on a four-month project for a local mining company, the total planned value of the project (BAC) is $600,000. We are at the end of month three, by the end of month three we are scheduled to spend $500,000(PV). The actual cost through this three-month mark is $450,000 (AC). The total work completed at the end of month three is 90 percent.

a) calculate the earned value, EV=?

b) Considering the previous questions, what is the CPI of the project at the end of the third month of work? (don't forget to round the answer to two decimal places)

c) Considering the previous questions, what is the SPI of the project at the end of the third month of work? (don't forget to round the answer to two decimal places)

d) Forecast the cost of the project (EAC-1), assuming that your efficiency (CPI) will stay the same as from the beginning of the project. (don't forget to round the answer to two decimal places)