At which point in the entire canal system the duty of water will be more?

At which point in the entire canal system the duty of water will be more? Correct Answer Head of the Water-course

As water flows from river to subsequent parts of the canal system some water losses takes place due to evaporation, and percolation. Due to this, the duty of water goes on increasing from starting point of canal system till its end point. Therefore, the duty of water is more at the last point of the system, i.e head of the water-course.

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How far is point 'R' from Point 'T'? Statement (I): Point 'R' is 5 metres to the north of point 'M'. Point 'U' is 4 metres to the east of point 'R'. Point 'T' is to the west of point 'R' such that points 'U' 'R' and 'T' form a straight line of  metres. Statement (II): Point 'Z' is metres to the south of point 'T'. Point 'U' is  metres to the east of point 'T'. Point 'M' is  metres to the east of point 'Z'. Point 'R' is  metres to the north of point 'M'. Point 'R' lies on the line formed by joining points 'T' and 'U'.