FedEx Interview Question: Die Hard question - you have ... | Glassdoor

Interview Question

Marketing Manager Interview Memphis, TN

Die Hard question - you have two containers, one holds

  3 gallons, one holds 5 gallons, unlimited supply of water. How do you get exacly 4 gallons in a container?

Interview Answer

5 Answers


Watch Die Hard

Interview Candidate on Oct 2, 2012

Fill the 3 gal jug up and pour 3 gal into 5 gal jug. Fill the 3 gal jug back up and pour into the 5 gal jug filling it up, leaving 1 gal in the 3 gal jug. Pour out entire 5 gal jug emptying it and pour the 1 gal from the 3 gal jug in the 5 gal jug. Fill the 3 gal jug back up and pour all 3 gal in the 5 gal jug giving you 4 gal.

live free on Feb 14, 2013

Fill the 5 gal container up and fill the 3 gal container up using the water in 5 gal container. So far there are 2 gal water left in 5 gal container. Then pour all the water in 3 gal container and fill it again with the 2 gal water in 5 gal container. Finally fill up the 5 gal container again and use the water in 5 gal container to fill the 3 gal container. Then there are 4 gal water left in the 5 gal container.

jspiii on May 6, 2013

Fill both buckets completely. Then dump half of each bucket. That gives you 4 gallons. 5+ 3 = 8. 8/2 is 4 gallons. Half of the 5 gallon bucket is 2.5 and half of the 3 gallon bucket is 1.5. 1.5 + 2.5 = 4.

Anonymous on May 1, 2015

Trick question. Just because each container CAN hold 3 gallons and 5 gallons, doesn't mean that they currently do.

So, fill both containers to full. You now have 8 gallons. Throw half of each container away, leaving you with 1.5 and 2.5 gallons. Tip the 1.5 into the 2.5 and voila!

Kevin Fetterplace on Aug 20, 2015

Add Answers or Comments

To comment on this, Sign In or Sign Up.