Please also EXPLAIN your answers, I am having a very difficult time understanding this concept. Thank you.

5.9. Determine the effect on the current ratio, the quick ratio, net working capital (current assets less current liabilities), and the debt ratio (total liabilities to total assets) of each of the following transactions. Consider each transaction separately and assume that prior to each transaction the current ratio is \\( 2 \\mathrm{X} \\), the quick ratio is \\( 1 \\mathrm{X} \\), and the debt ratio is \50. The company uses an allowance for doubtful accounts. Use I for increase, \\( \\mathrm{D} \\) for decrease, and \\( \\mathrm{N} \\) for no change