UGC NET 2018 :
A survey has been conducted on methods of commuter travel. Each respondent was asked to check Bus, Train or Automobile as a major method of travelling to work. More than one answer was permitted.
The results reported were as follows:
Bus 30 people;
Train 35 people;
Automobile 100 people;
Bus and Train 15 people;
Bus and Automobile 15 people,
Train and Automobile 20 people;
and all the tree methods 5 people.
How many people completed the survey form?
(a) 115
(b) 120
(c) 165
(d) 160
Solution:
5+15+5+10+70+10+5 = 120