Poder Inc. is considering a project that has the following cash flow data. What is the project's payback?

Year $0123$

Cash flows $$$$750$ $$300$ $$325$ $$350$

a$.2\mathrm{.}59$ years

b$.2\mathrm{.}12$ years

c$.2\mathrm{.}36$ years

d$.2\mathrm{.}85$ years

e$.1\mathrm{.}91$ years just give me the logic or formula not the answer itself