SSC JE Civil 7 Jun 2024 Shift 1 Paper

When the instrument is stationed near point P, the staff readings at point P and Q are 1.800 m and 2.600 m, respectively. When the instrument is stationed near point Q, the staff readings at P and Q are 1.500 m and 2.400 m, respectively. R.L. of point P is 100 m. Find the R.L. of point Q.