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I am trying to figure out how what formula to use to solve this percentage decrease problem:
"There are two bags with chocolate. Bag A has 30 pieces and Bag B has 24 pieces.
What percent fewer does Bag B have than Bag A?"
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We take the difference 30 - 24 = 6.
Next, we relate this difference to |A| = 30, since the bag A is the base for the comparison, according to the condition.
Then we multiply this ratio, , by 100 to get percentage
ANSWER = = = = 20%.
ANSWER. 20%.
Solved and carefully explained.
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In many percentage problems, THE MAJOR POINT is to understand, which of two or several instances is the base for the comparison.
Usually, it is clear from the context, but sometimes the reader (the student) should make A MENTAL EFFORT to get the correct understanding.