Answer and Explanation:
The preparation of the analysis is shown below:
Particulars Retained equipment Replace equipment Net income change
Variable cost $1,560,000 $1,230,000 $330,000
($520,000 × 3 years) ($410,000 × 3 years)
New machine cost $300,000 -$300,000
Net change $30,000
So based on the analysis the old machine should be replaced
Therefore we considered all the information given in the question