Subject: mathqa
Question: a company conducted a survey about its two brands , a and b . x percent of respondents liked product a , ( x – 20 ) percent liked product b , 23 percent liked both products , and 23 percent liked neither product . what is the minimum number w of people surveyed by the company ?
Option: 
A: w . 90
B: w . 100
C: 46
D: 80
Answer: B