Final answer:
The total amount Nora's grandfather will receive from Nora after 4 years, including 2% simple interest annually on a $10,000 loan, is $10,800.
Step-by-step explanation:
Nora's grandfather will receive the original loan amount plus the simple interest accumulated over 4 years. Simple interest can be calculated using the formula I = PRT, where 'I' is the interest, 'P' is the principal amount, 'R' is the rate of interest per year, and 'T' is the time in years.
Given:
Using the formula:
I = PRT
I = $10,000 * 0.02 * 4
I = $800
The total amount of interest Nora will pay is $800, and when added to the original loan amount:
Total amount to be repaid = Principal + Interest
Total amount to be repaid = $10,000 + $800 = $10,800
Therefore, Nora's grandfather will receive a total of $10,800 from Nora after 4 years.