Re: JNU ECOM 2011 QUES 23-32

Posted by Arushi :)) on Mar 26, 2014; 2:03pm
URL: http://discussion-forum.276.s1.nabble.com/JNU-ECOM-2011-QUES-23-32-tp7585342p7585559.html

In 2001,
ratio of sales of scientific to engineering books = R = x/y
In 2002,
sales of scientific books increased by 40% ; x' = x+0.40x
sales of engineering books decreased by 50%; y'= y-0.50y
=> r = 1.40x/0.50y
r/R = 1.40/0.50 = 2.8