Hi$,$ can you please solve this problem. I cant figure it out and I would like to know how to do it and what the answer is$.$ You should use the swamee equation for friction factor and tables for the values of cast iron, viscosity of water and such. thank you

Consider the following two$-$reservoir system connected by two pipes in series:

$1$

$1$ point

Water flows from tank $A$ to tank $B.$ The water surface elevation difference is $64\mathrm{.}0[$ ft $].$ The water temperature is ${68}^{0}F$ and the pipe material is cast iron. For the small pipe: $x_1$

$=822\mathrm{.}0[$ ft