Given:
Initial Volume = 80 L
Drainage flow rate = 2.5 L/ min
Required:
Time until 32.5 L of water is left in tank B
Solution
The volume of water drained when 32.5 L is left on tank B is:
Vd = 80 L - 32.5 L = 47.5 L of water drained.
the time required to drain 47.5 L of water is:
t = Vd / flowrate
t = 47.5 L / 2.5 L min
t = 19 min.
Answer.
It will take 19 min
