How can you boil an egg?

If you’re ready to give your brain a good workout and an excellent power boost, try this!

If you have a 7-minute hourglass and an 11-minute hourglass, how can you boil an egg in exactly 15 minutes?

ready for the answer?

To boil the egg in exactly 15 minutes, follow these four steps.

Start both hourglasses as you start boiling the egg.
After the 7-minute hourglass runs out, turn it over to start it again.
Four minutes later, when the 11-minute hourglass runs out, turn the 7-minute hourglass again.
Wait for the 7-minute hourglass to run out, which will take another four minutes and get you to exactly 15 minutes of boiling time.

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