Kindergarten 7963

In the first week of March, 5% of children in the kindergarten fell ill. In the second week of March, another 9 children fell sick, increasing to 20% of the total number of children. How many children went to kindergarten?

Correct answer:

n =  60

Step-by-step explanation:

0.05n + 9 = 0.20n

0.05·n + 9 = 0.20·n

0.15n = 9

n = 9/0.15 = 60

n = 60

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