$3-60$E$.$ For the hydraulic system of Figure $3-29,$ the following data are given:

The pump is adding $4$ hp to the fluid.

Pump flow is $25$ gpm $.$

The pipe has been changed to an $0\mathrm{.}75-$in$-$inside diameter size.

The specific gravity of the oil is $0\mathrm{.}9.$

The oil tank is vented to the atmosphere.

The head loss $H_L$ between stations $1$ and $2$ is $40$ ft of oil.

Find the pressure available at the inlet to the hydraulic motor $($station $2).$

Fig. $3-29$ is on the following page.