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      Question

      Two points E and F are 20 cm apart. G is a point on EF

      such that EG = 12 cm. If EG is increased by 25%, what is the percentage decrease in GF?
      A 28.8% Correct Answer Incorrect Answer
      B 37.5% Correct Answer Incorrect Answer
      C 15.5% Correct Answer Incorrect Answer
      D 18.25% Correct Answer Incorrect Answer

      Solution

      ATQ,

      EF = 20 cm

      EG = 12 cm

      So, GF = 20 – 12 = 8 cm

      New EG = 1.25 × 12 = 15 cm

      New GF = 20 – 15 = 5 cm

      Percentage decrease = {(8 - 5)/8} × 100 = 37.5%

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