A book consist of 30 pages, 25 line on each page and 35 characters on each line. If this content is written in another note book consisting 30 lines and 28 characters per line then the required no. of pages will how much percent greater than previous pages?
A. 4.16%
B. 5%
C. 6.66%
D. 7%
Answer: Option C
Solution (By Examveda Team)
$$\eqalign{ & {\text{Let the required number of pages be }}x. \cr & 30 \times 25 \times 35 = x \times 30 \times 28 \cr & x = 31.25 \approx 32 \cr & \% \,{\text{increase}}\,{\text{in}}\,{\text{number}}\,{\text{of}}\,{\text{pages}}, \cr & = {\frac{2}{{30}}} \times 100 \cr & = 6.66\% \cr} $$This Question Belongs to Arithmetic Ability >> Percentage
Book pages are in natural number, so 31.25 should be round to 32
Why do we need to round off here?
Illogical... 4.16% i.e. exact answer is already given in the options.
If we do not consider 32 pages and continue with 31.25 then option A(4.16%) perfectly satisfy 1.25 pages, if we are allowed to round off decimals then why options are provided too close to each other.