SOLUTION: a poll was taken of 100 students at a computer campus to find out how they come to campus. The result were as follows: 28 mentioned car pools, 31 used buses, 42 said they drove alo

Question 885155: a poll was taken of 100 students at a computer campus to find out how they come to campus. The result were as follows: 28 mentioned car pools, 31 used buses, 42 said they drove alone, 9 used both car pools and buses,10 used both car pool and sometimes their own cars, 6 used buses as well as their own cars, and 4 used all three methods.
question #1. How many used none of the above mentioned means of transportation?
#2. How many used buses and car pools only?
#3. How many used at least two of the mentioned means transportation?
#4 How many used at most one of the mentioned means transportation?
Found 2 solutions by richwmiller, MathTherapy:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!

1) 32
2) 22+6+12
3)10+4+9+6
4) 22+12+5

Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

a poll was taken of 100 students at a computer campus to find out how they come to campus. The result were as follows: 28 mentioned car pools, 31 used buses, 42 said they drove alone, 9 used both car pools and buses,10 used both car pool and sometimes their own cars, 6 used buses as well as their own cars, and 4 used all three methods.
question #1. How many used none of the above mentioned means of transportation?
#2. How many used buses and car pools only?
#3. How many used at least two of the mentioned means transportation?
#4 How many used at most one of the mentioned means transportation?

1) 8
2) 5
3) 17 (2 + 4 + 6 + 5)
4) 75 (42 + 20 + 13)
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