If the R.L. of a B.M. is 100.00 m, the backsight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

If the R.L. of a B.M. is 100.00 m, the backsight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

If the R.L. of a B.M. is 100.00 m, the backsight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is 


Answer: 99.345 m.