How long will you have to sell a product that has an income of $5000 per month

Question:

How long will you have to sell a product that has an income of $5000 per month and expenses of $1500 per month if your initial investment is?

$28,000 and your MARR is

(a) 0%

(b) 3% per month? Solve by formula.

MARR
Minimum Acceptable Rate of Return (MARR), or hurdle rate is the minimum rate of return on a project a manager or company is willing to accept before starting a project, given its risk and the opportunity cost of forgoing other... Payback Period
Payback period method is a traditional method/ approach of capital budgeting. It is the simple and widely used quantitative method of Investment evaluation. Payback period is typically used to evaluate projects or investments before undergoing them,...