Q30. If (p-3) (q+4) = 6, P and q being positive whole numbers the q is approximately what per cent of (p – q) is:

(a) 33.33%

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(b) 28.56%

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(d) 50%

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Solution

The correct option is B
(b) 28.56%

$\sqrt{(p - 3) (q + 4)} = 6 S q b o t h s i d e s (p - 3) (q + 4) = 6 \times 6 P - 3 = 6 a n d q + 4 = 6 P = 9 a n d q = 2 P - q = 7 p e r c e n t a g e = \frac{2}{7} \times 100 = 28.56 %$

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