how can I boil an egg for 15 minutes using only a seven-minute hourglass and an eleven-minute hourglass?

Question

Explain in detail.

Answer 1

set both hour-glasses. after the 7 min sand finishes, start boiling the egg and there is 4 min left. after the 4 minutes are over set the 11 minutes hourglass. when its finished youll have 15 min (4+11).

Answer 2

-Bring the water to a boil
-Start the 11 minute hour glass and the 7 minute hour glass at the same time
-When the 7 minute hour glass runs out >
-Drop the egg in the boiling water - you'll have 4 minutes remaining in the 11 minute.
-Turn the 11 minute hour glass over when depleted for a total on 15 minutes.

Answer 3

You need a stove to boil the eggs.

First, invert both hourglasses. Let them start ticking.

When the 7-min glass is just finished, there are 4 min left in the other glass. TIME ELAPSED = 7 min

No turn the 7-min glass immediately. Let the 11-min glass complete itself. When it completes, TIME ELAPSED = 4 min

It means also during this time 4 min of sand have fallen down in the 7 min glass, so invert that 7-min glass immediately & let it complete, TIME ELAPSED = 4 min

There you are, 7 + 4 + 4 = 15 min.

Answer 4

you are boiling the eggs in the tumbler not in an hourglass

Answer 5

There is no such thing as a "seven-minute' or an 'eleven-minute' hourglass. LOL LOL LOL

Answer 6

start both timers- when 7 min timer is done start your egg--leaves 4 min on 11 min timer-- when it finishes flip the 11 min timer -- 4min + 11 min = 15min.

Answer 7

use a clock!!! (sorry - too tired to think this 1 through!!)

Answer 8

just kill an ipod and all of your problems will be resolved