All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers
You'll be surprised (Posted on 2016-05-03) Difficulty: 2 of 5
In a certain town, 90% of the residents drink coffee, 80% drink tea, 70% drink whiskey, and 60% drink gin.
No one drinks all four.

What percent of the residents drink liquor?

No Solution Yet Submitted by Ady TZIDON    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution Answer only | Comment 1 of 5

They all do.

Under the stipulations of the problem, there are at most 30% who do not drink both tea and coffee. If these 30% drink both whiskey and gin, then there can be no overlap between the remaining 40% of whiskey drinkers, and 30% of gin drinkers, implying that everyone enjoys at least one kind of tipple.

Edited on May 3, 2016, 7:50 am
  Posted by broll on 2016-05-03 07:47:15

Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (2)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2019 by Animus Pactum Consulting. All rights reserved. Privacy Information