Need help determining if the answers are correct.

Determine the Payback, Discounted Payback, Net Present Value, Internal rate of return, Modified internal rate of return, Crossover rate, do the projects on their own, would you accept project, for projects A&B

In simple terms, the payback period is calculated by dividing the cost of the investment by the annual cash flow until the cumulative cash flow is positive, which is the payback year. Payback period is generally expressed in years.

Answers are based off of the cash flow of projects A&B. The cash flow starts in the negative and increases over the years. Each column is separate and calculations are done for each. the answers in blue are the numbers I came up with, when solving

Year Project A Project B -100000 -120000 5000 118000 W N - O 55000 69000 135000 Payback 3.7 3.97 Discounted Payback 2.3 yrs 1.03 yrs Net Present Value 47,854.57 42,308.25 Internal Rate of Return 28.908 39.540 Modified Internal Rate of Return 24.933 24.833 Crossover Rate Mutually Exclusive Projects* yes or no Independent Projects #based on NPV with a check mark 1=11%