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Railways PYQCBT 1 2016

RRB NTPC · Question 64

P + Q = 2(P – Q), if Q = 10, what is the value of P? A.10 B. 40 C. 20 D. 30

  1. D

  2. C

  3. A

  4. B

Show answer & explanation

Answer: (A) D

Explanation

With Q = 10, the equation becomes P + 10 = 2(P − 10) = 2P − 20. Then 10 + 20 = 2P − P, so P = 30.