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Slippery Supplier (Posted on 2013-11-12) Difficulty: 2 of 5
A grocer has six suppliers with each supplier selling a different brand of tea in 4-ounce packets at $ 20 per packet. The grocer knows that one of the suppliers gives short weight, each packet of his brand weighing only 3.75 ounces.

Using a digital scale with only one weighing, what is the minimum amount the grocer must spend to be sure of finding the supplier who gives short weight?

See The Solution Submitted by K Sengupta    
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re: answer - spoiler | Comment 2 of 6 |
(In reply to answer - spoiler by Ady TZIDON)

Right idea, I think, but he has 6 suppliers, not 4.
  Posted by Steve Herman on 2013-11-12 11:36:32

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