Trig informed us that on average we fill our tubs with 0.035 m3 of water when we take a bath.
We will take the result of 150 m3 /
second as the rate of flow of water in or out of the lock. The following
expression will yeild our rate of flow in bathtubs per second.
150 m3 per second / 0.035
m3 per bathtub
After performing the division we get :
4 286 bathtubs per second
Since we were given the approximate lock empty or fill time of 10
minutes we take our result to one significant digit.