The percent increase formula is :
[tex]\%=\frac{N-O}{O}\times100[/tex]where N is the new price and O is the orignal price
From the problem, N = $3.35 and O = $2.163
Using the formula above :
[tex]\%=\frac{3.35-2.163}{2.163}\times100=54.88\%[/tex]The answer is 54.88%
