Principal, $5000; Annual interest rate, 5.2%; time, 3 years
How much balance after 3 years

5780

Explanation:

Using the formula i = prt we first solve for the amount of interest accumulated over the 3 year time period.

So now we know that we accumulated $780.00 worth of interest  over the 3 year time period. Now, in order to find out how much is in the account we ad the amount of interest to the principle. Or, solve i + p = b

So, the balance will be 5780 after 3 years.

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce