
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
The 4th World Internet Conference was held in Wuzhen, Zhejiang Province from December 3rd to 5th, 2017. During the conference, a company's unmanned supermarket provided a brand new experience of new retailing brought by the internet. Little Zhang bought 15 items in total, including keychains and plush toys. After leaving the supermarket, he received a text message showing that he paid 240 yuan for keychains and 180 yuan for plush toys. It is known that the unit price of plush toys is 1.5 times that of keychains. What are the unit prices of keychains and plush toys respectively?

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