thanks for the response but can someone help with a more detailed expln.
1 insuff because we can't figure out the volume.Hence we can't find out the rate.
2 althought we know the capacity the tank can be
my pictures a re schematic and not drawn to scale))sorry
suppose that this figures above are of the same capacity!but the rate we'll be different!
1&2 same insuff so the answer is E
Hope it ll be somehow useful