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Pedro’s Drive-In servers a 15 ounce soft drink in a 16 ounce cup. He knows the cups are often filled to the top for 16 ounces of soft drink. He also knows that his employees often fill the cup with 14 ounces of drink. What is the relative error of the amount of drink Pedro’s 15-ounce soft drink?

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Answer:

0.067

Step-by-step explanation:

Relative error = δx = Δx/x = |Measured - Actual |/Actual

Case 1: 16 oz

δx = |16 - 15|/15 = 1/15 = 0.067

Case 2: 14 oz

δx = |14 - 15|/15 = 1/15 = 0.067

The relative error is 0.067.

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