Math Arguments

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Item 467

Two Questions of Average Difficulty

From Gabriel Rosenberg via email

True or False?

If my stock increases in value by 28% one year, and then decreased in value by 2% the following year, then on average it increased by 13% per year.

If I powerwalk to school at a constant speed of 4 miles per hour, and then saunter home at a constant speed of 2 miles per hour, then I averaged 3 miles per hour for my trip.


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Gabriel Rosenberg
PREALG

Source: Gabriel Rosenberg
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