At the end of 2015, Apple had cash and short-term investments of $41.60 billion, accounts receivable of $35.89 billion, current assets of $89.38 billion, and current liabilities of $80.61 billion

a. What was Apple's current ratio?

b. What was Apple's quick ratio?

c. What was Apple's cash ratio?

d. At the end of 2015, HPQ had a cash ratio of 0.35, a quick ratio of 0.73 and a current ratio of 1.15. What can you say about the asset liquidity of Apple relative to HPQ?