
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
Salesperson: "Come and buy, special price eggs, originally 15 yuan per box, now 12 yuan per box, each box contains 30 eggs." Customer A: "I bought these special price eggs in the store, and the money spent is 90 yuan less than double the amount it would cost at the original price for the same number of eggs." Customer B said: "My family bought two boxes of eggs at the special price, and after 18 days, the remaining 20 eggs all went bad."

(1) Is it cost-effective for customer B to buy the two boxes of eggs? Please explain your reasoning through calculation.  
(2) How many boxes of special price eggs did customer A buy in the store? Assuming the shelf life of these special price eggs is another 15 days, how many eggs should customer A consume on average per day to avoid waste?

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