A sewer is laid from a manhole to a manhole , 250 m away along a gradient of 1 in 125. If the reduced level of the invert at is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at , is

A sewer is laid from a manhole to a manhole , 250 m away along a gradi

1.	A sewer is laid from a manhole to a manhole , 250 m away along a gradient of 1 in 125. If the reduced level of the invert at is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at , is
A.	208.75 m
B.	202.75 m
C.	206.75 m
D.	211.75 m
Answer» D. 211.75 m