On National Day,12000 participants took part in the national day parade.55% of the participants wore red shirts and the rest wore white shirts.how many participants wore white shirts?

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100% - 55% = 45% wore white shirts.

how many wore white shirts?

To find out how many participants wore white shirts, we need to calculate the remaining 45% of participants who did not wear red shirts.

Step 1: Calculate the number of participants who wore red shirts.
Given that 55% of the participants wore red shirts, we can find this by multiplying the total number of participants by the percentage:
Total participants wearing red = 55% of 12000
= (55/100) * 12000
= 6600 participants

Step 2: Calculate the number of participants who wore white shirts.
To find the remaining 45% of participants who wore white shirts, we subtract the number of participants wearing red shirts from the total number of participants:
Total participants wearing white = Total participants - Participants wearing red
= 12000 - 6600
= 5400 participants

Therefore, there were 5400 participants who wore white shirts.