Final answer:
The Accounting Rate of Return for Project 1 is 12.5%, calculated by dividing the annual income by the initial investment. For Project 2, the ARR is 14%, calculated similarly, but not considering the salvage value in the ARR calculation.
Step-by-step explanation:
To compute the Accounting Rate of Return (ARR), we use the formula: ARR = Average Annual Profit / Initial Investment. For Project 1, there is no salvage value, so the average annual profit is the annual income of $17,250. The ARR for Project 1 is $17,250 / $138,000 = 0.125 or 12.5%. For Project 2, the salvage value affects the average annual profit because it reduces the initial investment cost over the life of the project. Therefore, the ARR for Project 2 is ($15,120 annual income + $18,000 salvage value) / $108,000 initial investment, but since salvage value is realized at the end of the project life, we omit it from average annual income and treat it as a reduction in initial cost. The ARR for Project 2, therefore, remains based solely on the annual income: $15,120 / $108,000 = 0.14 or 14%.
For Project 1:
Accounting rate of return = Annual income / Initial investment
= $17,250 / $138,000
= 0.125 or 12.5%
For Project 2:
Accounting rate of return = Annual income / Initial investment
= $15,120 / $108,000
= 0.139 or 13.9%
Therefore, the accounting rate of return for Project 1 is 12.5% and for Project 2 is 13.9%.