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      Question

      What number should be deducted from 45 and 30 so that their

      new ratio becomes 4:3?
      A 14 Correct Answer Incorrect Answer
      B 17 Correct Answer Incorrect Answer
      C 15 Correct Answer Incorrect Answer
      D 25 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the required number be 'y'.

      ATQ,

      (45 - y) : (30 - y) = 4 : 3

      Or, 3 ├Ч (45 - y) = 4 ├Ч (30 - y)

      Or, 135 - 3y = 120 - 4y

      Or, y = 15

      So, y = 15

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