How many used cars and public transportation but not bikes?


Posted December 15th, 2009 by admin 2 Comments »
cars
Mario asked:


A survey of 200 students at a nonresidential college was taken to determine how they got to campus during the fall term. Of those surveyed, 118 used cars, 102 used public transportation, and 70 used bikes. 48 students used cars and public transportation, 38 used cars and bikes and 26 used public transportation and bikes. 22 students used all three modes of transportation. How many used cars and public transportation but not bikes?