Siya wants to buy a new state of the art computer for R35 000. He decides to save by depositing an amount of R500 once a month into an account earning 11,32% interest per year, compounded monthly. The approximate time it will take Siya to have R35 000 available is
[1] 70 months.
[2] 40 months.
[3] 115 months.
[4] 54 months.
[5] none of the above.