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Subject :IMO    Class : Class 6

In a certain town some people were affected by a ’flu’ epidemic. In the first month 20% of the population contracted the flu whilst 80% were healthy. In the following month 20% of the sick people recovered and 20% of the healthy people contracted the disease. What fraction of the population is healthy at the end of the second month?


Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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