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Question
Concrete weighs 3,915 pounds per cubic yard. Calculate weight of a five gallon bucket of concrete(in pounds).

I will assume that "gallon" refers to a U.S. fluid gallon.
5 gal = 0.0247556584 ydł
The bucket has a capacity of 0.0247556584 cubic yards.

0.0247556584 ydł × 3915 lb/ydł ≅ 96.92 lb
A five-gallon bucket of concrete weighs approximately 96.92 pounds. (Concrete is much denser than water. Five gallons of water weighs less than half as much.)
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#### Janet Yang

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I can answer questions in Algebra, Basic Math, Calculus, Differential Equations, Geometry, Number Theory, and Word Problems. I would not feel comfortable answering questions in Probability and Statistics or Topology because I have not studied these in depth.

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I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

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Co-author of An Outline of Scientific Writing: For Researchers With English as a Foreign Language

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I have a Bachelor's degree in Applied Mathematics from the University of California at Berkeley.

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George White Elementary School. Homework Help program at the Ridgewood Public Library, Ridgewood, NJ. Individual students.