Monday, November 18, 2013

IQ test Answer - to the question what does the Ball cost?

Did you guess that the ball would cost $.10?  Most people do.  The question (if you missed the question see it here) looks deceptively simple.  

But if the ball did cost $.10 then the bat would cost $1.10 and the total would be $1.20.  Most of us learned basic algebra in grade school.  But to do the following in your head is more time consuming:

Total Cost = $1.10 
Ball           = X
Bat            = X+1.00

So we are solving for  $1.10 = X+(X+$1.00) 

subtract $1.00 from both sides:  

$.10 = 2X

dived both side by 2

$.05 = X

ANSWER: The ball costs $.05

For some reasons when we have to take time to read the more difficult to read version of the question we are more willing to take the time to do the algebra.

In Malcolm Gladwell's new book David and Goliath he explores some very interesting and counter intuitive phenomenons related to a variety ways that the underdog wins and wins big.


  1. Thanks for sharing this informative article about iq. Also you can learn more about a young lady who has iq level 225 which is very much high. Vishalini iq level is recorded as a world record. You can also get more information about her while visiting this website. Also share some updated iq news in your website
    vishalini iq

  2. Interesting blog. This is one of my favorite blog also I want you to update more post like this. Thanks for sharing this article.
    IQ Development Training in Chennai

  3. This is really interesting blog. I’m enjoying devouring your site!!. Thanks for sharing such a nice blog.

  4. I had the good fortune of reading your post regarding IQ. Thanks a lot for writing such post. I must say this is one of the best posts on IQ that I have come across. To all your readers I want to recommend IQ TESTS (link below) to check out where their IQ stands. These tests are very helpful.