What is the total added weight from the potable water and hydraulic fluid?

What is the total added weight from the potable water and hydraulic fluid?

• A. 40 lb
• B. 43 lb
• C. 46 lb
• D. 44 lb

Answer: (B)

Total added weight comes from the sum of the weights of all fluids present. For each fluid, multiply its volume (in gallons) by its weight per gallon, then add the results together. In aviation problems, potable water is typically 8.34 lb per gallon, and hydraulic fluid is about 7.5 lb per gallon. So the total added weight is 8.34 × (gallons of potable water) plus 7.5 × (gallons of hydraulic fluid). Using the volumes given in the problem, this calculation comes to 43 lb. The other totals would require different volumes or different densities than those specified.

Total added weight comes from the sum of the weights of all fluids present. For each fluid, multiply its volume (in gallons) by its weight per gallon, then add the results together. In aviation problems, potable water is typically 8.34 lb per gallon, and hydraulic fluid is about 7.5 lb per gallon. So the total added weight is 8.34 × (gallons of potable water) plus 7.5 × (gallons of hydraulic fluid). Using the volumes given in the problem, this calculation comes to 43 lb. The other totals would require different volumes or different densities than those specified.