
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
Leilei buys instant noodles and gives the shopkeeper a 100-yuan bill. After giving her change, the shopkeeper says, "You gave me one bill, but I gave you 16 bills and 5-yuan worth of instant noodles. You really made a profit!" If the change given by the shopkeeper consists of bills worth either 10 yuan or 5 yuan, then how many of these 16 bills are worth 10 yuan?

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