Answer:
11%
Step-by-step explanation:
The returns on an investment can be calculated as:

where:
r is the return
I is the interest earned in the investment
P is the principal (the amount of money invested)
In this problem for Ivy, we have:
P = $5,000 (amount invested by Ivy)
I = $550 (interest earned by Ivy)
Therefore, the return on the investment is:
