I need help with this 3-part question with work shown please! REALLY appreciate it.

Based on the balance sheet and income statement given: 1. Determine the current ratio for the construction company. What does this number mean? 2. Determine the pre-tax profit margin. What does this number mean? 3. Determine the collection period-with and without retention- for the construction company. What do these numbers mean? You may want to use these equations: Current Ratio = Current Assets Current Liabilities Pretax PM = Net Profit Before Taxes Revenues Coll. Period = Accounts Receivable(365) Revenues