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Au vs Pb (Posted on 2013-08-01) Difficulty: 4 of 5
What solid bar weighs more: 18 ounces of lead or 18 ounces of gold?

See The Solution Submitted by Ady TZIDON    
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Solution Solution | Comment 1 of 3
Gold is measured in "International troy ounce" which is approximately equivalent to 31.1034768 grams.

Lead is measured in "International avoirdupois ounce" which is approximately equivalent to 28.349523125 grams

So, an 18 ounces gold bar weighs more than an 18 ounces lead bar.

Source: http://en.wikipedia.org/wiki/Ounce

Edited on August 1, 2013, 1:40 pm
  Posted by K Sengupta on 2013-08-01 13:20:47

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