Question

Suppose 20% of kids who visit a doctor have a fever, and 30% of kids with a fever have sore throats. What's the probability that a kid who goes to the doctor has a fever and a sore throat?

Answer 1

So, we know that 60% of kids out of 100 has a fever. That would be 60 kids out of 100. Out of those 60 kids, 20% have a sore throat. To figure out what 20% of 60 is, we multiply it. 12 kids come with a fever and sore throat out of 100 so then we have 12%! That is your answer.