An investment of $100 is worth $240 7 years later. The arithmetic average return is 20%. What is the geometric average return? See slide 43 L3 discussed in class. Express your answer as a percent to one decimal (XX.X) % An investment of $100 is worth $240 7 years later. The arithmetic average return is 20%. What is the geometric average return? See slide 43 L3 discussed in class. Express your answer as a percent to one decimal (XX.X) %