after a concert for 1,600 people, only 8 people said they would not go to see the band again. What percent of the people who wen
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the original price is "x", or 100%.
but we know that if we reduce "x" by 20%, namely 100% - 20% = 80%, the 80% of "x" is really £50, what is "x" or the 100% anyway?