In: Mechanical Engineering
A company is considering two methods for obtaining a certain part. Method A will involve purchasing a machine for $40,000 with a life of 5 years, a $2,400 salvage value, and a fixed annual operating cost of $8,000. Additionally, each part produced by the method will cost $8. Method B will involve purchasing the part from a subcontractor for $30 per part. At an interest rate of 10% per year, determine the number of parts per year required for the two methods to break even. (Enter your answer as a number without the dollar $ sign.)
Soln. Information from question:
Cost of Machine (investment) = 40000 dollars
Life of machine, n = 5 years
Salvage value after 5 years = 2400 dollars
Fixed annual operating cost = 8000 dollars
Variable cost of production = 8 dollars per part
Sales price of product = 30 dollars per part
Interest rate per year, r = 10%
Present value of the salvage value = Salvage value after n years / (1+r)n
= 2400 / (1+0.1)5 = 1490 dollars
Rate of depreciation of asset or machine = (40000 - 1490)/5 = 7702 dollars per year
Break even is a point in a business when revenues equals to the cost
Number of parts to be produced to reach break even = Total Fixed costs / (sales price/part - variable cost/part)
= Total fixed costs / (30 - 8)
= Total fixed costs / 22
For the first year, total fixed cost = 40000 + 8000 = 48000 dollars
Hence, Number of parts to be produced during first year to reach break even = 48000 / (30 - 8) = 2182
Value of asset in second year = Previous year value - Depreciation per year = 40000 - 7702 =
For the second year, total fixed cost = (40000 - 7702) + 8000 = 40298 dollars
Calculated number of parts required to be produced to reach break even for each year can be tabulated as follows:
Year | Value of asset, dollars | Fixed cost/year, dollars | Total fixed cost, dollars | Sales price/ part, dollars | Variable cost/ part, dollars | Number of parts required to be produced to reach beak even |
1 | 40000 | 8000 | 48000 | 30 | 8 | 2182 |
2 | 32298 | 8000 | 40298 | 30 | 8 | 1832 |
3 | 24596 | 8000 | 32596 | 30 | 8 | 1482 |
4 | 16894 | 8000 | 24894 | 30 | 8 | 1132 |
5 | 9192 | 8000 | 17892 | 30 | 8 | 782 |