syuradi, S., Satyahadewi, N. and Perdana, H. 2023. Determination of the Annual Pension Fund Premium for Joint-Life Status Using the Aggregate Cost Method. Pattimura International Journal of Mathematics (PIJMath). 2, 2 (Nov. 2023), 71-78. DOI:https://doi.org/10.30598/pijmathvol2iss2pp71-78.