Answer:
3.06 years
Explanation:
The break-even point is when the total revenue equals the total production costs. In case of the change in manufacturing plan, the break even point is when the additional fixed costs are equal to the savings from the reduced manufacturing costs
Total Manufacturing Costs
Opt 1: Hand Tool Method
Cost = 1.60$/unit*4200unit/year*xyear
Cost = $6720x
Opt 2: Automated System
Cost = 0.65$/unit*4200unit/year*xyear
Cost = $2730x
Additional Fixed Costs
Additional Fixed Cost = $13400 - $1200
Additional Fixed Cost = $12200
Break Even Point
Additional Fixed Cost = Opt 1 Manufacturing Cost - Opt 2 Manufacturing Cost
$12200 = $6720x - $2730x
12200 = 3990x
x = 3.06 years
Assumptions: