The price of a notebook was $3.50 yesterday Today, the price rose to$3.75. How do you find the percentage increase?

Dec 5, 2016

7.1% subtract the final price by the original price to find the increase and then divide the increase by the original price.

Explanation:

Find the increase

$3.75 - 3.50 = .25$

Then divide the increase by the original amount

$\frac{.25}{3.50} = .0714285$

To change to a percent multiply by 100 and round off to significant numbers

# .0714285 = 7. 14285% or 7.1% or just 7%