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In 2007, 4% of people buying new cell phones purchased a bluetooth earpiece during the same transaction

Math Mar 20, 2021

In 2007, 4% of people buying new cell phones purchased a bluetooth

earpiece during the same transaction. In 2012, 28% of people buying new cell phones purchased a bluetooth earpiece during the same transaction.  
Of the following choices, what is correct about the growth of bluetooth sales?

- It rose by 24%.
-It rose by 24 percentage points.
-It rose by 12%.
-It rose by 120 percentage points.

Expert Solution

Solution:

The correct answer is it rose by 24 percentage points

Explanation:

In the year 2004, people buying cell phones purchased a bluetooth earpiece during the same transaction = 4%

In the year 2012, people buying cell phones purchased a bluetooth earpiece during the same transaction = 28%

The difference between the two percentages is 28 - 4 = 24%

Therefor, the percentage of people buying cell phones purchased a bluetooth earpiece during the same transaction is rose by 24 percentage points.

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