There is 478 liters and 360 milliliters of water in the tank. 239 L and 125 milliliters of water is consumed. How much water is left in the tank? Oa 239 L 235 ml Ob 239 L 236 ml Oc 239 L 237 m
The Correct Answer and Explanation is:
To find how much water remains in the tank, we begin by expressing both quantities—initial and consumed—in milliliters for easier subtraction.
Step 1: Convert to milliliters Initial quantity: 478 liters = 478,000 milliliters 360 milliliters = 360 milliliters Total = 478,000 + 360 = 478,360 milliliters
Consumed quantity: 239 liters = 239,000 milliliters 125 milliliters = 125 milliliters Total = 239,000 + 125 = 239,125 milliliters
Step 2: Subtract consumed from initial 478,360 ml – 239,125 ml = 239,235 milliliters
Step 3: Convert back to liters and milliliters 239,235 milliliters = 239 liters and 235 milliliters
Therefore, the correct answer is: Option a) 239 L 235 ml
Explanation: This problem tests your ability to manage mixed units, a common real-world skill. Handling liters and milliliters together requires standardizing the units before performing any arithmetic. By converting everything to milliliters, we simplify subtraction without worrying about borrowing across units. Once the difference is found, we convert the result back into a familiar format—liters and milliliters—to match the answer choices.
This method ensures precision and eliminates the possibility of minor errors from attempting mixed-unit subtraction directly. It also mirrors approaches used in scientific fields where conversions are essential for accuracy. Understanding how to navigate unit conversion and arithmetic together is foundational in chemistry, medicine, cooking, and engineering.
Answer: 239 liters and 235 milliliters remain in the tank.
