Question

craig likes to collect records. last year he had 10 records in his collection. now he has 15 records. what is the percent increase of his collection?

Answer 1

His collection increased in a 20%.

Explanation:

If 100% represents 10 records, what percentage would be for 12 records?

x = 12 100% / 10 = 120%

So, if we subtract 120% - 100%, it's gonna result in a difference of 20%, which means that 12 represents a 20% more, or his collection increased in a 20%.