Question

you survey 200 people about electronics they own. the results show that 33 over 40 people own a cell phone. Of these people, 10 over 11 also own an mp3 player. A. What fraction of the people own a cell phone and an mp3 player? B. How many people own a cell phone, but not an mp3 player? Explain?

Answer 1

A. 3/4 is the answer. This is because for this problem you have to multiply 33/40 by 10/11 which equals 330/440 which reduces to 3/4.