The shortest IQ Test with just 3 questions!

It's called Cognitive Reflection Test (CRT). Some people say you can separate the Einsteins from the "less" Einsteins with this test.

Questions

1. A bat and a ball cost $1.10 in total. The bat costs $1.00 more than the ball. How much does the ball cost?
2. If it takes five machines five minutes to make five widgets, how long would it take 100 machines to make 100 widgets?
3. In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?

Scroll down for the answers.. don't worry if you get them wrong, you are not alone.

Most people answers:

1. The ball costs $0.10
2. 100 minutes
3. 24 days

Answers
1: The ball costs $0.05
2: 5 minutes
3: 47 days

Comment your results :)