Answer: Roy will earn $400 on the T-bill at maturity
Step-by-step explanation:
To calculate how much Roy will earn on the T-bill at maturity, we need to determine the interest or discount earned on the bill.
The formula to calculate the interest earned on a T-bill is:
Interest = Par value - Purchase price
In this case, the par value of the T-bill is $10,000, and Roy paid $9,600 for it.
Interest = $10,000 - $9,600
Interest = $400