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Quick answers to mathematical problems.
Solution: 5000×0.4%×400=20×400=8000 yuan.

A: The insurance premium payable by the school is 8,000 yuan.

The premium rate is the ratio of the premium payable to the insured amount. (Rate = insurance premium/insurance amount)

So insurance premium = insured amount × rate.

Total insurance premium = insurance amount × rate × number of students

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