There are certain number of persons sitting in a row and all were facing South and all are scored different marks in an exam among 20, 27, 33, 38, 40, 43, 45 and 50 but not necessarily in the same order.
P is in the middle of the row. Q is fifth to the right of R. Two persons sit between S and T who is five places away from U. The sum of marks of V and T is equal to sum of marks scored by S and W. One among the four scored the highest marks and one among the four scored the lowest marks. V is third from one of the extreme ends but is not sitting between Q and R. V scored more marks than P but less than U. R is at one of the extreme end. W sits to the immediate left of V. Three people sit between T and P who is immediate right of U. Number of persons between T and P are same as number of persons between P and Q. The difference between the marks scored by S and Q is equal to the difference between the marks scored by T and R.
Solution :

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