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09-07-2021
Mathematics

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A aluminum bar 3 feet long weighs 12 pounds. What is the weight of a similar bar that is 3 feet 4 inches long?

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09-07-2021

Answer:

13 1/3 pounds.

Step-by-step explanation:

3 feet = 36 inches

3 feet 4 inches = 36 + 4 = 40 inches

By proportion the weight of the larger bar = 12 * 40/36

= 12 * 10/9

= 120/9

= 13 1/3 pounds.

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