Apollo Spas services 195 hot tubs. If each hot tub needs 105 mL of muriatic acid, how many liters of acid are needed for all of the hot tubs? Write final answer to 1 decimal place. Use the Unit Conversion Table to complete the conversion. Unit Conversion Table Iters

**Step 1: Calculate the total amount of acid in milliliters** Each hot tub requires \(105\) mL, and there are \(195\) hot tubs. The total amount of acid needed is: \[ 105 \times 195 = 20475 \text{ mL} \] **Step 2: Convert milliliters to liters** We know that: \[ 1 \text{ liter} = 1000 \text{ mL} \] Thus, the total amount in liters is: \[ \frac{20475}{1000} = 20.475 \text{ liters} \] **Step 3: Round the final answer to 1 decimal place** Rounding \(20.475\) to one decimal place gives: \[ 20.5 \text{ liters} \] **Final Answer:** \(20.5\) liters