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Problem 4. Your company has been hired to pump out the basements of 3 public buildings that were submerged during river flooding. The dimensions of the basements are: Depth(ft) 12 Building City Hall Elementary School Middle School Length (ft) 120 160 200 Width (ft) 120 160 200 10 9 You plan to position your pump(s) at ground level outside of the building and feed a 40 foot long suction hose through the basement widow(s). Because of debris in the basements, you will install a strainer at the end of the inlet hose. The strainer adds the equivalent of 3 feet of head on the inlet side of the pump. You will run a 100 foot discharge hose to the top of a levee 20 feet above the level of the pump(s). You will need to rent a pump or pumps. Local suppliers have the following available Cost per day $60 S80 $110 Pump model Model 18-M (3-in.) Model 20-M (3-in.) Model 40-M (4-in.) 3 in hose (40 ft) 3 in hose (100 ft) 4 in hose (40 ft) 4 in hose (100 ft) Cost per week $300 $400 $550 $10 $20 $15 S25 S2 S4 $3 S5 One worker can operate up to three pumps. Labor cost is $30/hour. Pumps must be shut down for maintenance and fueling 30 minutes every 12 hours. Assume that fuel costs are equal for all alternatives. a. Choose the type(s) and number(s) of pumps needed to complete the job in no more than 48 hours. b. Find the total cost for pumps and labor for this job. Problem 4. Your company has been hired to pump out the basements of 3 public buildings that were submerged during river flooding. The dimensions of the basements are: Depth(ft) 12 Building City Hall Elementary School Middle School Length (ft) 120 160 200 Width (ft) 120 160 200 10 9 You plan to position your pump(s) at ground level outside of the building and feed a 40 foot long suction hose through the basement widow(s). Because of debris in the basements, you will install a strainer at the end of the inlet hose. The strainer adds the equivalent of 3 feet of head on the inlet side of the pump. You will run a 100 foot discharge hose to the top of a levee 20 feet above the level of the pump(s). You will need to rent a pump or pumps. Local suppliers have the following available Cost per day $60 S80 $110 Pump model Model 18-M (3-in.) Model 20-M (3-in.) Model 40-M (4-in.) 3 in hose (40 ft) 3 in hose (100 ft) 4 in hose (40 ft) 4 in hose (100 ft) Cost per week $300 $400 $550 $10 $20 $15 S25 S2 S4 $3 S5 One worker can operate up to three pumps. Labor cost is $30/hour. Pumps must be shut down for maintenance and fueling 30 minutes every 12 hours. Assume that fuel costs are equal for all alternatives. a. Choose the type(s) and number(s) of pumps needed to complete the job in no more than 48 hours. b. Find the total cost for pumps and labor for this job