December 2015

What a turnaround!


The other day I ran into a friend whom I had not met for a long time. He owned a library. Ashish looked rather glum. I asked him what was troubling him.

"Can't seem to be making a living out of my library," he said. "People, it seems, don't like to read. Very few people have signed up as members in my library."

I strongly disagreed with Ashish that people didn't like to read. There can be no better friend than a good book!

"How much do you charge as the subscription fee?" I asked him. He told me. I thought the fee was too high. "Reduce the fee," I told him, "then, I will also sign up as a member". After some light conversation we departed.

Few months later, I recalled my promise to Ashish about signing up as a member in his library. I went to his place and found him very busy. There were quite a number of members who were searching for books in the shelves.

"You seem to have made a turaround," I told him.

"Oh yes, I thought over your suggestion and implemented it. I reduced the subscription fee by 20 per cent and, as a result, my total collection amount has increased by 60 per cent," Ashish told me smiling from ear to ear.

"That's wonderful! What has been the percent increase in the number of members?" I asked him.

"Why don't you work that out from the details I have provided? If you do so, I will offer you free membership in my library," he said.

I have always been weak in math. Please help me figure out the percent increase in the number of members; if you help me I will get to read all the wonderful books for free!

Click here for the solution

Some useful links for
your career:

  • Union Public Service Commission -
  • IIT-Kharagpur -
  • Indian Statistical Institute -
  • Indian Institute of Technology Madras -
  • Indian Institute of Management, Ahmedabad -
  • Indian Institute of Mass Commission -
  • IIT Bombay -
  • Indian School of Mines, Dhanbad -
  • Birla Institute of Technology, Ranchi -
  • Central Institute of Fisheries Nautical and Engineering Training -
  • Indian Institute of Information Technology, Allahabad (Deemed University) -
  • Central Marine Fisheries Research Institute, Kochi -
  • Tata Institute of Social Sciences, Mumbai -

DISCLAIMER: The contents of this website are for informational purposes only. Although due care is taken, the correctness and accuracy cannot be guaranteed. The science and medical research articles are for informational purposes only, aimed at kindling an interest in science. They are not intended to provide any kind of advice.