Sunday

April 20, 2014

April 20, 2014

Posted by **Denise** on Sunday, April 14, 2013 at 10:58pm.

(a) How many students owned either a car or an iPod (but not both)?

1 students

(b) How many students do not own either a car or an iPod?

2 students

- Math -
**Reiny**, Sunday, April 14, 2013 at 11:34pmAre you supposed to do these with Venn diagrams?

If so, draw two intersecting circles, name one P the other one C (for pod and car)

place 20 in the intersection of the two circles

There are supposed to be 60 in the P circle, but we already have 20 of those accounted for.

So put 40 in the P circle which does not intersect the other circle

There are supposed to be 50 in the C circle, but we have already placed 20 of those, so put 30 in the C circle not intersecting with any of the other.

number of students in the C and P circle , but not in the intersection is

40 + 30 = 70

The total I see in both circles is 40 + 20 + 30 = 90

But 100 students were surveyed, so

10 students are not in either circle, thus

10 students do not own a car or Ipod

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