6. A'construction business requires a water pump for their operations. According to their estimate the current water pump has a yearly maintenance cost of $35,000 and it could last for 7 more years. 6. A construction business requires a water pump for their operations. According to their estimate the current water pump has a yearly maintenance cost of $35,000 and it could last for 7 more years. The company could also replace the old water pump by acquiring a new water pump for $250,000 the new equipment would have a yearly maintenance cost of $22,500 and would last for 10 years with no salvage value. Determine if they should keep or replace their current water pump. Use a 7% interest rate per year