Based on the cashflows from each investment, the investment that should be chosen based on the payback period is Investment B.
This can be found as:
= Investment / Annual cash inflow
= 15,000 / 5,000
= 3 years
= Year before payback + Amount left to be paid / Cash inflow in year of payback
= 2 + (15,000 - 8,000 - 6,000) / 4,000
= 2 + 1,000 / 4,000
= 2.25 years
The company should pick Investment B as it pays back sooner than Investment A.
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