You need say how big the bathtub it is or you cant do it.
type the rest and ill try to answer it
Answer:
Let x = number of minutes
( 2.5 liters/min )*(x) = 30 liters
x = (30 liters) / (2.5 liters/min)
x = 30/2.5 min [note how liters cancel]
x = 12 min
Check:
Is 2.5*12 = 30 ?
30 = 30 ?yes
