First City Bank pays 4.6 percent simple interest on its savings account balances, whereas Second City Bank pays 6.3 percent interest compounded annually. If you made a $493 deposit in each bank, how much more would the Second City Bank account be worth than the First City Bank account at the end of 3 years

The owner of firewood to go is considering buying a hydraulic wood splitter which sells for $50,000. he figures it will cost an additional $100 per cord to purchase and split wood with this machine, while he can sell each cord of split wood for $125. if, for this machine, design capacity is 50 cords per day, effective capacity is 40 cords per day, and actual output is expected to be 32 cords per day, what would be its efficiency?