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?  Options:
A) 20 %
B) 305
C) 50 %
D) 71.4 %
E) 60 %

Rationale: "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 % d"
Answer: D