Question

the price of a notebook has dropped to $3.10 today. yesterday's price was $3.60 . find the percentage decrease. round your answer to the nearest tenth of a percent.

Answer 1

Yesterday = $3.60
Today =     $3.10

% Decrease =      ((3.60 - 3.10) / 3.60)  * 100%
   
                     =   (0.50/3.60)   * 100%
 
                     ≈       0.1389* 100%
  
                     ≈ 13.89 %

                    ≈ 13.9 %   to the nearest tenth.

Answer 2

Answer:

-13.9 %

Step-by-step explanation:

Given,

The price of notebook yesterday or original price = $ 3.60,

Today, the price of the notebook or new price = $ 3.10,

Hence, the percentage decrease = $\frac{\text{New price - Original price}}{\text{Original price}}\times 100$

$=\frac{3.10-3.60}{3.60}\times 100$

$=-\frac{50}{3.60}$

$=-13.8889\%$

$\approx -13.9\%$