Final answer:
To find the original amount of money invested at an annual interest rate of 7% for two years, divide the earned interest by the product of the rate and time. The original amount invested was $80,000.
Step-by-step explanation:
To find the original amount of money invested, we can use the formula for simple interest: Interest = Principal * Rate * Time.
In this case, the interest earned is $11,200, the rate is 7% (0.07), and the time period is two years.
So, the equation becomes: 11,200 = Principal * 0.07 * 2.
Dividing both sides of the equation by 0.14, we get: Principal = 11,200 / 0.14 = $80,000.
Therefore, the original amount of money invested was $80,000.