Your portfolio has provided you with returns of 7.4 percent, 16.6 percent, -6.1 percent, and 15.6 percent over the past four years, respectively.

What is the geometric average return for this period? %

What is the arithmetic average return for this period? %

Your brother's portfolio has provided with returns of 7.4 percent, 10.7 percent, 9.2 percent, and 10.8 percent over the past four years, respectively.

What is the geometric average return for this period? %

What is the arithmetic average return for this period? %