Problema Solution

A popular yogurt manufacturer reduced their $.89 yogurt container from 8oz to 6oz and reduced the price of the 6oz container to $.71. What is the percentage change in the container size and did the price change have the same percentage change?

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A company which sold its products in 4.7 kg containers has reduced its container size to 4.2. The retail price dropped from $2.49 to $1.92. What was the percent change in the unit price