
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 our daily life, mathematical knowledge is everywhere. Look, Grandma gave Xiaoqiang a math problem. Grandma said, "Last Tuesday, I spent 20 yuan to buy several kilograms of apples at the supermarket. When I went again on Saturday, I happened to encounter a special sale event at the supermarket, where each kilogram of apples was 1 yuan cheaper than on Tuesday. As a result, I spent 4 yuan more but got 50% more apples than last time. Can you calculate how many kilograms of apples I bought on Saturday?" Please help Xiaoqiang to solve this.

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