To calculate the gross collection ratio, we need to divide the total collections by the total charges. In this case, the gross collection ratio would be $400,000 / $820,000 = 0.49.
To calculate the operating ratio, we need to divide the total operating expenses by the total revenues. Since the net income is given, we can use it to calculate the total operating expenses by subtracting it from the total revenues. In this case, the total operating expenses would be $960,000 - $305,000 = $655,000. Therefore, the operating ratio would be $655,000 / $960,000 = 0.68.