40 replies to this topic

[rookie1ja]

Pouring water III. - Back to the Water and Weighing Puzzles
Given three bowls: 7, 4 and 3 liters capacity. Only the 7-liter is full. Pouring the water the fewest number of times, make the quantities of 2, 2, and 3 liters.

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
Pls visit New Puzzles section to see always fresh brain teasers.

Spoiler for Solution

Pouring Water III. - solution
Three numerals in each number stand for litres in each bowl:
700 - 340 - 313 - 610 - 601 - 241 - 223 (overspilling 6 times)

[riddler]

Twice: 7 liter into the 3 liter leaving 4 in the 7 liter container. Then pour half of whats left "4" into the last 4 liter container so you have 3-2-2. Thus two pours.

[iamramy]

Twice: 7 liter into the 3 liter leaving 4 in the 7 liter container. Then pour half of whats left "4" into the last 4 liter container so you have 3-2-2. Thus two pours.

in these puzzles you cant pour a fraction of a bowl...that wouldnt be much of a puzzle now would it?

this is what i got in 5 pours:(using the same 3-digit code)
700-403-133-124-520-223

[funky_D]

you can't do 133 without doing 430...
i did 700, 403, 430, 133, 142, 520, 223.

[jsimms]

how about 700 304 331 601 241 223

[normdeplume]

how about 700 304 331 601 241 223

Assuming jars are 7 - 3 - 4 based on your first pour, your fourth pour goes out of sequence (which would mean you have 4 in your 3 jar! You would need to pour the 1 in the 4 into the 3. this effectively is the same as the admin's answer.

[cmcl]

you can't do 133 without doing 430...
i did 700, 403, 430, 133, 142, 520, 223.

You can't go from 142 to 520. There's a 502 step in between, which makes it seven steps.

[moboo's pain]

i still dont see whats wrong with 700 403 223

[brownknows]

i still dont see whats wrong with 700 403 223

You can't pour *half* of the 4 liters into another bowl, because you have no way of accurately measuring a half. You must pour entire bowl-fulls.

[rwright88]

I had to register just to post this answer. It is three pours:

From the 7, pour into the 4 and 3 (leaving the 7 empty). Then pour half of the four into the 7, leaving 2 liters in the 7, 2 liters in the 4 and 3 liters in the 3.

700, 340, 043, 223