Final answer:
Using the units-of-production method, the company would record depletion in 2024 in the amount of $39,600, derived from $9 per ton cost and 4,400 tons sold.
Step-by-step explanation:
To calculate the depletion for the company in 2024 using the units-of-production method, we first need to determine the cost per ton of the gravel. This is done by dividing the total cost of the quarry rights by the estimated salable rock. So, $315,000 ÷ 35,000 tons = $9 per ton. In 2024, the company sold 4,400 tons, so the depletion expense is 4,400 tons × $9 per ton = $39,600.