Question

The price of a notebook was $3.40 yesterday. Today, the price rose to $3.65 . Find the percentage increase. Round your answer to the nearest tenth of a percent.

Answer 1

Answer:

7.4%

Step-by-step explanation:

Take $3.65 and divide it by $3.40, and you get 1.073529412...

The decimal after 1 is the percentage increase, so 7.3529412, but it asks to round to the nearest tenth, therefore, your answer is 7.4%.

Answer 2

Answer: The percentage of increase is 7.4%

Step-by-step explanation:

1. You must apply the following formula for calculate the percentage of increase, where x is the percentage asked, a is the amount of change and b is the original amount:

$x=(\frac{a}{b})100\\x=\frac({3.65-3.40}{3.40})100\\x=7.35$

2. Rounded to the nerarest tenth:

$x=7.4$%