A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows:

Question

29 said they drove alone.
25 rode in a carpool.
30 rode public transportation.
7 used both carpools and public transportation.
6 used both a carpool and sometimes their own cars.
8 used buses as well as their own cars.
5 used all three methods.
How many used none of the above-mentioned means of transportation?

Answer 1

What did you find in your Venn Diagram?

Answer 2

that the answer is 47 is that right?

Answer 3

check my reply to this post
http://www.jiskha.com/display.cgi?id=1382280503

It is the same question, only the numbers have been changed. Follow the same method

Answer 4

ok i will but i guess 47 was wrong?

Answer 5

we could do it this way:

number(alone or carpool or public)
= 29 + 25+30 - 7 - 6 - 8 + 5
= 68

so number without any of those = 100 - 68 = 32

Answer 6

Thank you I like and understand this way better