Problema Solution
A car dealership interviewed every driver who came onto their lot on Tuesday. This produced the following results: there were 42 people who owned trucks and 87 people who owned cars. If 14 people owned both a truck and a car and 5 people owned neither, how many people were interviewed?
(Points : 2)
Answer provided by our tutors
Total number of people with trucks=42
Total number of people with cars=87
Total number of people with trucks and cars=14
Total number of people no vehicle=5
Total number of vehicles=42+87=129
14 people had both so they have been counted twice
subtract 14/2 from total vehicles to neutralize
129-7=122
5 had no vehicle. They havn\t been counted
122+5=127 people