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      Question

      If 70% of (P - Q) is the same as 35% of 80% of (P + Q),

      then what is the ratio of Q to P?
      A 3:5 Correct Answer Incorrect Answer
      B 5:4 Correct Answer Incorrect Answer
      C 2:3 Correct Answer Incorrect Answer
      D 1:7 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Given

      70% of (P - Q) = 35% of 80% of (P + Q)

      Or, 7 × (P - Q) = 28 × (P + Q) [70% = 7/10, and 35% of 80% = 28% =
      28/100]

      Or, 7P - 7Q = 28P + 28Q

      Or, -21P = 35Q

      Or, Q/P = -3/5

      Or, Q:P = 3:5

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