The inventory level will be used by an inventory manager to regulate the optimal time for manufacturing, if they are handling a manufacturer's warehouse, or to demand more if the product is being stored as stock at a store.
To solve this:
Get first the Current Assets this solved by multiplying the current liabilities to the current ratio.
CA = $500 (1.5) = $750
Then get the inventory level by multiplying the current asset to the product of the current liabilities and quick ratio.
Inventory level = $750 (500 x 1.1) = $412,500