math
posted by Anonymous .
In a recent survey of 100 women, the following information was gathered.
39 use shampoo A.
42 use shampoo B.
48 use shampoo C.
14 use shampoos A and B.
15 use shampoos A and C.
12 use shampoos B and C.
8 use all three.
Use the figure to answer the question in the problem.
How many are using shampoos A and C, but not B (Region IV)?
1 women
I came up with 15 women is that right

My intepretation:
N = 39 + 48 + 15 = 102.