What power required by the pump

when pipe $D$ discharging $1021$ liters

per seconds. Assume $f=0\mathrm{.}02$ in all

pipes.

a$.492\mathrm{.}84hp$

b$.289\mathrm{.}46hp$

c$.312\mathrm{.}67hp$

d$.285\mathrm{.}89hp$