The project is behind schedule and within its budget
B- If you want to evaluate how the project is doing with respect to the schedule and budget, you need to calculate CPI and SPI.
The first step is to write down the information you have so far:
BAC = $450,000
planned % complete = 45%
actual % complete = 40%
AC = $165,000.
Now you can calculate PV = BAC x planned % complete
PV= $450,000 x 45% = $202,500.
And you can calculate EV = BAC x actual % complete
EV= $450,000 x 40% = $180,000.
Now you have the information you need to calculate CPI and SPI.
CPI = EV / AC = $180,000 / $165,000 = 1.09, which is above 1.0so your project is within its budget. And you can calculate SPI = EV / PV = $180,000 / $202,500 = .89, which is below 1.0 - so your project is behind schedule.