Darlene earned $6.75 interest on her savings account for a 15 month. What was the average amount of interest Darlene earned on her savings account per month
Divide 6.75 by 15 to get the average since there were 15 months. 6.75 / 15 = 0.45 That means the average amount of interest Darlene earned per month is $0.45. Hope this helps!