please help, none of my answers have been making sense

-Assume a postaudit showed that all estimates (including total sales) were exactly correct except for the variable expense ratio,

which actuallv turned out to be 50%. What was the proiect's actual net present value? (Negative amount should be indicated by a

minus sign. Round intermediate calculations and final answer to the nearest whole dollar amount.)

Net present value:

-Assume a postaudit showed that all estimates (including total sales) were exactly correct except for the variable expense ratio,

which actually turned out to be 50%. What was the project's actual payback period? (Round your answer to 2 decimal places.)

Pavback period: years

-Assume a postaudit showed that all estimates (including total sales) were exactly correct except for the variable expense ratio,

which actually turned out to be 50%. What was the project's actual simple rate of return? (Round your answer to 2 decimal places.)

Simple rate of return %

Required information [The following information applies to the questions displayed below] Cardinal Company is considering a five-year project that would require a $2,500,000 investment in equipment with a useful life of five years and no salvage value. The company's discount rate is 12%. The project would provide net operating income in each of five years as follows: Click here to view Exhibit 128-1 and Exhibit.12B-2, to determine the appropriate discount factor(s) using table