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    Question

    1. Ed=1

    i. MR is negative

    1. Ed>1

    ii. MR=0

    1. Ed<1

    iii. MR is positive

    A a) i, b) ii, c) iii Correct Answer Incorrect Answer
    B a) ii, b) iii, c) i Correct Answer Incorrect Answer
    C a) iii, b) i, c) i Correct Answer Incorrect Answer
    D a) i, b) iii, c) ii Correct Answer Incorrect Answer

    Solution

    TR is constant when Ed = 1. So, MR=0. When PED is elastic, TR increases so, MR is positive. When PED is inelastic, TR decreases so, MR is negative.

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