If you had an infinite supply of water and a 5 quart and 3
quart pail, how would you measure exactly 4 quarts?

Answer Posted / u.s. navy (retired)

Like I do all the time when I swab the deck! Most pails
have quart markings. Fill 3 quart pail with water,
transfer to 5 quart pail. Fill 3 quart pail with another 1
quart of water, transfer to 5 quart pail (=4 quarts of
water in the 5 quart pail).

Be careful! This looks like one of those questions that
could have several answers, but the interviewer is looking
for the most simple one that saves time & supplies. Most
interviewers know if you are a math or engineer major from
your resume and know you can handle the math, but they want
to see how you would handle a simple task.

By pouring out water from the 5 quart pail, you are wasting
it...what does this tell the potential employer? You may
be a wasteful person (not resourceful), may overspend on
projects, can't handle simple common sense tasks, over
analyzer, and the list could go on & on. Most employers
(including the military) look for ways to save money, time,
effort, etc.

Remember "KISS-Keep It Simple Silly" and don't read too
much into the question for correct mathematical answers.

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