x - alone - 32 ... 32 - 4 - 1 - 4 = 23
y - carpool - 35 ... 35 - 3 - 4 - 4 = 21
z - public - 31 ... 31 - 3 - 1 - 4 = 23
y,z - 7 ... 7 - 4 = 3
x,y - 8 ... 8 - 4 = 4
x,z - 5 ... 5 - 4 = 1
x,y,z - 4
the subgroups are contained in other groups and must be accounted for
... this is MUCH easier with a Venn Diagram
N - none
... 100 - 23 - 21 - 23 - 3 - 4 - 1 - 4 = ?
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows:
32
said they drove alone.
35
rode in a carpool.
31
rode public transportation.
7
used both carpools and public transportation.
8
used both a carpool and sometimes their own cars.
5
used buses as well as their own cars.
4
used all three methods.
How many used none of the above-mentioned means of transportation?
I tried 9,82, and 73... and they are all wrong help please!
1 answer