Oil with kinematic viscosity (u=7.5 times 10^{-4} mathrm{ft}^{2} / mathrm{s}) flows at (45 mathrm{gpm}) in a 100-ft-long

Question:

Oil with kinematic viscosity $u=7.5 \times 10^{-4} \mathrm{ft}^{2} / \mathrm{s}$ flows at $45 \mathrm{gpm}$ in a 100-ft-long horizontal drawn-tubing pipe of $1 \mathrm{in}$. diameter. By what percentage ratio will the energy loss increase if the same flow rate is maintained while the pipe diameter is reduced to 0.75 in.?

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