Question

suppose there are 200 men, of which 100 are smokers, and 100 women, of which 20 are smokers. what is the probability that a person chosen at random will be a smoker?

Answer 1

2/5, 40%

Explanation:

200 men + 100 women = 300 people

100 men smokers + 20 woman smokers = 120 smokers

120 smokers/300 people = 40/100 = 40% = 0.4 = 4/10 = 2/5

The probability is 2 out of 5 people

-Chetan K