In the reservoir$-$pipe$-$pump system shown below, the

water is pumped from Reservoir $B$ to $C$ and the head

at junction $C$ is $150m.$ Assuming the minor head loss

due to valve is $5m$ on pipe $1$ and discharge is $100l\frac{t}{s}$

in pipe $3,$ find the pump power if the efficiency is $0\mathrm{.}9.$