On increasing the number of lines in a page by 100, they become 240. What is the % of increase in the no. of lines in the page?  Choose the correct choice
A) 20%	B) 305	C) 50%	D) 71.4%	E) 60%
Explanation : Number of pages increased = 100   Now , the number of pages of book = 240   Number of pages of the books before increase = 240 – 100 = 140   % increase in the number of pages in the book = 100 /140   x 100% = 71.4%   71.4%
<result>D</result>
On increasing the number of lines in a page by 100, they become 240. What is the % of increase in the no. of lines in the page?