The price of a notebook was $3.40 yesterday. today, the price rose to $3.90 . find the percentage increase. round your answer to the nearest tenth of a percent.

Hello

So we can divide the old value by the new to get the percentage

3.40/3.90 = 0.87

Now we subtract this by 100%

1 - 0.872 = 0.132

The price when up 13.2%

Hope this helps!

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