John's Food Market Had the Following Financial Data at December

John's Food Market had the following financial data at December 31, 2018:
$$\begin{array} { | l | r | } \hline \text { Cash } & \$ 54,000 \\\hline \text { Cash Equivalents } & 24,000 \\\hline \text { Accounts Receivable } & 40,000 \\\hline \text { Total current liabilities } & 130,000 \\\hline\end{array}$$ $$\begin{array} { l l } \text { Cash and cash equivalents } & \$ 78,000 \\\text { Total current liabilities } & 130,000\end{array}$$ a. What is the cash ratio as of December 31, 2018? Show the formula and your computations.
b. Comment on the cash ratio for Metro Construction Company.