Question
a.
∑ B.S. - ∑ F.S. = difference in R.L.S of the first station and last station
b.
∑ (R.L. + I + F.S.) - first R.L = ∑ (H.I. + No. of R.L.s.)
c.
both (a) and (b) above
d.
neither (a) nor (b).
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