Answer:
7.5%
Explanation:
Cost savings :
= Equipment cost - New machine cost
= 30,000 - 12,000
= 18,000
Depreciation per year :
= Cost of automated bottling machine ÷ Useful years
= 120,000 ÷ 10
= 12,000
Simple rate of return:
= (Cost savings - Depreciation of new equipment) ÷ (cost - salvage of old)
= (18,000 - 12,000) ÷ (120,000 - 40,000)
= 6,000 ÷ 80,000
= 0.075
= 7.5%