ALGEBRA
posted by Monic .
In a recent survey of 100 women, the following information was gathered.
36 use shampoo A.
37 use shampoo B.
38 use shampoo C.
14 use shampoos A and B.
8 use shampoos A and C.
9 use shampoos B and C.
3 use all three.
Use the figure to answer the question in the problem.
How many are using shampoo A only (Region I)?

ALGEBRA 
MathMate
The question is best answered with a Venn diagram.
Start with those that use all three.
14 use A & B, so 143=11 use A & B but not C.
8 use A & C, so 83=5 use A & C but not C.
So those who use A only
A only = 36(11+3+5)=17
Respond to this Question
Similar Questions

math
In a recent survey of 100 women, the following information was gathered. 30 use shampoo A. 43 use shampoo B. 33 use shampoo C. 13 use shampoos A and B. 7 use shampoos A and C. 5 use shampoos B and C. 3 use all three. How many are using … 
ALGEBRA
In a recent survey of 100 women, the following information was gathered. 36 use shampoo A. 46 use shampoo B. 37 use shampoo C. 19 use shampoos A and B. 11 use shampoos A and C. 10 use shampoos B and C. 9 use all three. How many are … 
math
In a recent survey of 100 women, the following information was gathered. 31 use shampoo A. 27 use shampoo B. 36 use shampoo C. 8 use shampoos A and B. 3 use shampoos A and C. 5 use shampoos B and C. 1 use all three. Use the figure … 
math
In a recent survey of 100 women, the following information was gathered. 53 use shampoo A. 31 use shampoo B. 31 use shampoo C. 4 use shampoos A and B. 10 use shampoos A and C. 13 use shampoos B and C. 3 use all three. Use the figure … 
math
In a recent survey of 100 women, the following information was gathered. 53 use shampoo A. 31 use shampoo B. 31 use shampoo C. 4 use shampoos A and B. 10 use shampoos A and C. 13 use shampoos B and C. 3 use all three. Use the figure … 
math
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 … 
algebra
In a recent survey of 100 women, the following information was gathered. 29 use shampoo A. 28 use shampoo B. 34 use shampoo C. 3 use shampoos A and B. 7 use shampoos A and C. 6 use shampoos B and C. 1 use all three. How many use shampoo … 
math
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 … 
math
In a recent survey of 100 women, the following information was gathered. 32 use shampoo A. 41 use shampoo B. 40 use shampoo C. 2 use shampoos A and B. 4 use shampoos A and C. 10 use shampoos B and C. 1 use all three. Use the figure … 
Math
In a recent survey of 100 women, the following information was gathered. 42 use shampoo A. 38 use shampoo B. 34 use shampoo C. 7 use shampoos A and B. 9 use shampoos A and C. 11 use shampoos B and C. 5 use all three. How many are using …