Paula asked 30 students what they ate for lunch.

All the students had at least a sandwich, salad or fruit.
*********************************
QUESTION A
Draw a Venn Diagram.
* * * * * * * * * * * * * * * * *
THIS IS THE INFORMATION FROM THE DIAGRAM:

5 students had a sandwich, salad and fruit.
3 students had a sandwich only.
7 students had salad only.
7 students had fruit only.
4 students had a sandwich and salad.
2 students had a sandwich and fruit.
2 students had salad and fruit.
**********************************
1 person is now chosen at random.
**********************************
QUESTION B
Find the probability that they have a sandwich but not fruit.
* * * * * * * * * * * * * * * * *
ANSWER: 7/30?
**********************************
QUESTION C
Given that the person has salad, find the probability that they also have fruit.
* * * * * * * * * * * * * * * * *
ANSWER: 7/18 or 7/25 or 7/30 or
7/14 = 1/2?
**********************************

1 answer

Agree with B.

B. How many had salad? 18

Of those, how many also had fruit?

7 So it is 7/18
Similar Questions
  1. CHECK ANSWERS PLEASE********************************** Paula asked 30 students what they ate for lunch. All the students had at
    1. answers icon 1 answer
  2. Paula asked 30 students what they ate for lunch.All the students had at least a sandwich, salad or fruit.
    1. answers icon 2 answers
  3. 10 Paula asked 30 students what they ate for lunch.All the students had at least a sandwich, salad or fruit. 5 students had a
    1. answers icon 2 answers
    1. answers icon 1 answer
more similar questions