Rinky dink family fun centre bought new bumper boats for its recreation facility. The useful life is 6 years. The bumper boats had a total cost $5338 and will generate $1570 total cash inflows each year for the life of the boats. The residual value of the bumper boats is $650. The payback period in years is closed to 1)2.99 2)2.40 3)3.40 4)3.81