# The price of an item yesterday was $80. Today, the price rose to $172. How do you find the percentage increase?

##### 1 Answer

May 3, 2017

#### Explanation:

#"to calculate "color(blue)"percentage increase"# use.

#color(red)(bar(ul(|color(white)(2/2)color(black)(%" increase "="increase"/"original" xx100)color(white)(2/2)|)))#

#"increase in price "=$(172-80)=$92#

#"original price "=$80#

#rArr%" increase "=92/cancel(80)^4xxcancel(100)^5#

#color(white)(rArr%increasex)=23xx5=115%#