Question

Lily likes to collect records. Last year she had 12 records in her collection. Now she has 15 records. What is the percent increase of her ​collection?

Answer 1

Answer: 15 is a 25% increase of 12.

Step-by-step explanation: Difference of 12 and 15 = |12 - 15|/((12 + 15)/2) = 3/13.5 = 0.22222222222222 = 22.222222222222%