A hydraulic vane pump running at $1800rpm$ develops $2\frac{L}{s}$ flow at $750$kPa. Volumetric efficiency is $\mathrm{.}85$ and overall efficiency is $0\mathrm{.}8.$ Determine the Power, $P,$ developed in $kW.$

$15kW$

$1500kW$

$2\mathrm{.}0kW$

$1\mathrm{.}5kW$

$2000kW$