# NSA's 2018 Puzzle Periodical

Try your hand at this month's problem written by a member of our expert workforce.

Creator Challenge Difficulty Rating: **Easy**

June 19, 2018

*Puzzle created by James M., NSA Operations Researcher*

48 ounces of coffee was divided between four mathematicians: Albert, Bianca, Carl, and Dmitri. Albert looked at the amounts in his colleagues' mugs and said, "I feel bad about taking this much coffee, as I've already had several cups today." Albert then poured an equal amount of coffee into each of the other three mugs until he had none left.

Bianca cried, "Now I have the same amount you did! This is too much for me - I'm trying to cut back, anyway." She then divided all of the coffee in her mug equally between the other three mugs.

Carl said, "Well now I have what Albert started with. There's no way I'm going to finish all of this." Then Carl shared all of his coffee equally among everyone else.

Dmitri, not wanting to seem greedy, shrugged and performed the same action. When Dmitri was finished, everyone was amazed to see they all had the same amount of coffee in their mug that they started with!

How much coffee did each mathematician have at the beginning?

Image is for graphical purposes only and is not representative of the solution.