In a survey, 60% of those surveyed owned mobile phone and 80% of those surveyed owned a TV. If 55% owned both a mobile phone and TV. What percent of those surveyed owned a mobile phone or a TV or both?

In a survey, 60% of those surveyed owned mobile phone and 80% of those surveyed owned a TV. If 55% owned both a mobile phone and TV. What percent of those surveyed owned a mobile phone or a TV or both?

A 90%

B 80%

C 85%

D 495%

Solution

Correct Answer: Option C

n(M∪T)=n(M)+n(T)-n(M∩T)
=60+80-55=85%