
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In order to save water, a city has set up the following water charges: if the monthly water usage does not exceed 24 tons, the charge is 1.8 yuan per ton; if it exceeds 24 tons, the excess part is charged at 4 yuan per ton. It is known that in a certain month, Xiao Zhang's family paid 19.2 yuan more for water than Xiao Wang's family (water usage is calculated in whole tons). How much did Xiao Zhang and Xiao Wang's families each pay for water?

Present the answer in LaTex format: \boxed{Your answer}
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