In a survey of 150 shoppers at a grocery store, 85 bought rice, 70 bought wheat flour and 30 bought both. How many shoppers bought wheat flour but not rice?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 40
The 70 shoppers who bought wheat flour include the 30 who bought rice as well. Those who bought wheat flour but not rice are what is left after taking these 30 away.
Wheat flour only \(=70-30=40\)
(Rice only \(=85-30=55\); neither \(=150-(55+30+40)=25\))
