Consider the following information for DEF Ltd.'s new venture:

•Initial investment: $200,000

•Year 1 cash inflow: $40,000

•Year 2 cash inflow: $50,000

•Year 3 cash inflow: $60,000

•Year 4 cash inflow: $70,000

•Year 5 cash inflow: $80,000

Requirements:

•Calculate the payback period.

•Determine the NPV using a discount rate of 10%.

•Find the IRR.

•Compute the total cash inflows over the investment period.

•Assess the investment's viability based on NPV and IRR.