Challenging Brain Teaser to Test Your Skills – September 9 Edition

Boiling a Two-Minute Egg with Limited Timers

Problem Overview

Dr. Johnson is faced with the challenge of boiling a two-minute egg using only a three-minute and a five-minute hourglass timer.

Solution Steps

To successfully boil the egg for the desired two minutes, Dr. Johnson can follow these steps:

1. Begin by boiling the water.
2. Once the water reaches a boiling point, flip both the three-minute and five-minute timers simultaneously.
3. When the three-minute timer runs out, Dr. Johnson should place the egg into the boiling water.
4. When the five-minute timer runs out, exactly two minutes will have passed since the egg was added. At this point, he can remove the egg from the water.

By following these steps, Dr. Johnson can achieve perfectly boiled eggs using his available timers.