$($c$).$ A pump is installed in a $15$ cm diameter pipe with total length of $300$ m

to pump $0\mathrm{.}060\frac{m^3}{s}$ of reservoir water at temperature of $27C.$ The

elevation difference between the supply reservoir and the receiving

reservoir is $25$ m $.$ If the pump has $18$ cm impeller intake diameter, a

cavitation parameter of $=0\mathrm{.}12,$ and total head loss of $1\mathrm{.}3$ m on the

suction side, determine the maximum allowable distance between the

pump intake and the water surface elevation in the supply tank. Use

$C_{HW}=120.$help