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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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