$7\mathrm{.}13$ The pump shown in Fig. P$7\mathrm{.}13$ is delivering hydraulic oil with a specific gravity of $0\mathrm{.}85$ at a rate of $75\frac{L}{m}in.$ The pressure at A is $-20$ kPa and the pressure at B is $275$ kPa $.$ The energy loss in the system is $2\mathrm{.}5$ times the velocity head in the discharge pipe. Calculate the power delivered by the pump to the oil.

FIGURE P$7\mathrm{.}13$ Hydraulic pump for Problem $7\mathrm{.}13.$