...a life insurance company.? given the amount of money the man has available to invest, the insurance company is able to offer two alternatives. the first option is to receive $2785 each month for as long as he lives; the second option is to receieve $3500 each month, but for only 20 years (payments will be made to his estate if he should die before that time) the relevant interest rate is 6 percent per year. how long must the man live so that the first option is a better deal?

can someone please tell me how to answer this question?
i need answer to this question for my finance assignment!!!