The value of a rare coin according to the 1979 edition of a Guide Book of American coins is listed as $480. The 1997 value had increased to $1584.

Question

What was the percent increase in the value of this coin?

Answer 1

percent increase = amount of increase ÷ original price

 

x/100 = 1584 - 480 / 480

x/100 = 1104 / 480

x/100 = 2.30

x = 230

 

The percent of increase is 230, or a 230% increase.