Five-ninths 7036

Five-ninths of the class has already paid CZK 60 for a theatrical performance. So, there are only ten sinners left. How many students go to class?

Correct answer:

n =  22.5

Step-by-step explanation:

n - 5/9n = 10

n - 5/9·n = 10

4n = 90

n = 90/4 = 22.5

n = 45/2 = 22.5

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