Answer to Question #190363 in Discrete Mathematics for mufafa

Question

In a market, 50 women sell only Apple, 25 sell Apple and Banana and 50 sell Banana. Each woman sells at least one the two fruits. How many women are there? 

Answer 1

As we see, 50 sell only apple, they cannot sell anything else. 25 sell apple and banana, 50 sell banana (not only, just banana, which means that they may sell apple). So, 50 sell only apple, 25 sell apple and banana, 25 sell only banana. There are 100 people in total.