(i) For the base year: substitute the results of the definitions in the RIR (vide (27.2)), note that the prices cancel and that g = gp. Then find the base year result as stated, and then use (NG /WT) W = g to get the annual expression.
(ii) For (1), we use
= 1
NG /WT = g[0] / W[0] from above. Then simply rework the equation for a constant.
For (2), if NG/WT and Z are constant, write B = c W. Then
B /