The price of a notebook has risen to $3.90 today. Yesterday's price was $3.40 . Find the percentage increase. Round your answer to the nearest tenth of a percent.

Respuesta :

$3.90 -$3.40 =$0.5($0.5/$3.90 )=(x/100)    (  0.5*100)=3.4x                 x =50/3.9                  x=12.8205 percent

Answer:

14.7

Step-by-step explanation: