a) 20%
b) 5% more
c) 30% less
d) 35% less
Answer: a
Explanation: Let x be the page required when report is retyped
Now, we can use work equivalence method
20 × 55 × 65 = 70 × 65 × x
x = $$\frac{{20 \times 55 \times 65}}{{70 \times 65}}$$
x = 15.70 = 16 pages.
% reduction in pages = $$\left( {20 – 16} \right) \times \frac{{100}}{{20}}$$ $$\, = \,$$ $$20\% $$
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