Math is Fun

Math is Fun Home PageHOME

A-Z Listing


Top-rated teacher Web sites rated by teacher usage
Edunet site of the week January 2001
Maths Is Fun is ICRA Registered
Copyright © 2006
MathsIsFun.com

Hourglasses 1

Puzzles -> Measuring Puzzles

Hourglasses 1You need to boil eggs for exactly 9 minutes, or else the visiting Duchess will complain, and you will lose your job as head chef.

But you have only 2 Hourglasses, one measures 7-minutes, and the other measures 4-minutes. How can you correctly measure 9 minutes?




.
-\./^\./-


Do you have the answer? Check against our solution!
Discuss this puzzle at our Forum