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      Question

      M and N are two numbers. Their average is 160, and the

      sum of M and N is 120% of M. What percentage of M is the difference between M and N?
      A 22% Correct Answer Incorrect Answer
      B 20% Correct Answer Incorrect Answer
      C 29% Correct Answer Incorrect Answer
      D 18% Correct Answer Incorrect Answer

      Solution

      ATQ;
      Since M + N = 120% of M

      So, M : N = 5 : 6

      (M βˆ’ N) : M = 1 : 5

      Therefore,

      1/5 Γ— 100% = 20%

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