In July 2007, Apple had cash of $7.12 billion, current assets of $18.75 billion, and current liabilities

Question:

In July 2007, Apple had cash of $7.12 billion, current assets of $18.75 billion, and current liabilities of $6.99 billion. It also had inventories of $0.25 billion.
a. What was Apple’s current ratio?
b. What was Apple’s quick ratio?
c. In July 2007, Dell had a quick ratio of 1.25 and a current ratio of 1.30. What can you say about the asset liquidity of Apple relative to Dell?