SAS i believe :) sorry if im wrong!
Detective PI can have 13 days of Orange juice before she runs out
The answer is 7440
24%=3720
48%= 3720*2
48% = 7440
Yes -4 is a interference number

this formula is used to determine gpm (gallons per minute) of flow with a known hose diameter (d) and nozzle pressure (np). The constant (29.7) is consistent when figuring flow with in gallons with a know pressure expressed in psi (pounds per square inch).
Scenario example: a firefighter is using a handline to fight fire with an 1 3/4 inch line with a nozzle pressure of 100 psi. How much water is the firefighter flowing when fighting fire?