Final answer:
The amount of interest that should be paid on July 1 is $300.
Step-by-step explanation:
To calculate the interest on the loan, you can use the formula:
Interest = Principal x Rate x Time
In this case, the Principal is $10,000, the Rate is 6% per year, and the Time is 6 months (since the loan is to be repaid on July 1, which is 6 months after January 1).
Using the formula, the interest can be calculated as follows:
Interest = $10,000 x 0.06 x 0.5 = $300
Therefore, the amount of interest that should be paid on July 1 is $300.