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Railways PYQCBT 2 2017

RRB NTPC · Question 53

If P :Q : R is 1/3 : 2/3 : 1/4 and Q = 56, then P - R = ?

  1. 5

  2. 8

  3. 6

  4. 7

Show answer & explanation

Answer: (D) 7

Explanation

Multiply by 12: P : Q : R = 4 : 8 : 3. Q = 56 means one part = 7, so P = 28 and R = 21, and P − R = 7.