Final answer:
To calculate the water bill for a household that used 25 kl of water, multiply the amount of water used by the cost per kiloliter, resulting in a total cost of $107.50.
Step-by-step explanation:
To calculate the cost of water used by a household that consumed 25 kiloliters (kl) in a month, we will use the given rate of $4.30 charged per kiloliter. Using the metric system for calculations makes sense when dealing with the large volumes of water typical for household consumption, as it is easier to measure and understand such significant amounts in kiloliters rather than liters.
Here's the calculation:
- Multiply the total kiloliters used in a month by the cost per kiloliter.
- 25 kl × $4.30/kl = $107.50
Thus, the household will pay for $107.50 for the 25 kl of water used in the month.