Determine the minimum and maximum permissible load currents

Question

Problem

A loaded zener regulator circuit is shown below. If the zener used is a ZY11 (datasheet on back), assuming zener impedance at test current is constant through all regulating operation, determine the minimum and maximum permissible load currents and associated resistances.

I_L(min) =
R_L(max) =
I_L(max) =
R_L(min) =

What is the load regulation expressed as a percentage?

Attachment:- Render.rar