TMUA Beyond Horizon Set 3 Paper 2 · Question 7

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Beyond Horizon Set 3 Paper 2 · Q7

Paper 2Algebra

Each of the positive real numbers $a,b,c,d,e$ is decreased by $20\%$ . Find the resulting percentage change in the value of the following expression:

\frac{a-b}{cd}-\frac{b^2+c^2}{d^3+ae^2}

Assume that the initial value of the expression is positive.

ANo change

BDecrease of

20\%

CIncrease of

20\%

DDecrease of

25\%

EIncrease of

25\%

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