In Net's hair salon 45% of the customers dye their hair blond, 36% dye their eyebrows blond and 35% straighten their hair. 20% of the customers have none of these three procedures, while 12% take all of these three procedures. What percent of the customers come for exactly 2 of these 3 procedures? Choose the correct choice from the following answers
A) 5%	B) 9%	C) 12%	D) 15%	E) 21%
Let a total of 100 people visit the salon.   Total = 100   Dye hair blonde (A) = 45 % = 45   Dye Eyebrows blonde (B) = 36% = 36   Straighten Hair (12%) = 35% = 35   Neither = 20% = 20   All Three = 12% =12   Total = A+B+12% - (Sum of Exactly Two group overlaps) - 2*(All three) + Neither   100 = 45+36+35 - (Sum of Exactly Two group overlaps) - 2*12 + 20   (Sum of Exactly Two group overlaps) = 9   %of customers coming for exactly 2 of the 3 procedures = 12%   12%
<result>C</result>
In Net's hair salon 45% of the customers dye their hair blond, 36% dye their eyebrows blond and 35% straighten their hair. 20% of the customers have none of these three procedures, while 12% take all of these three procedures. What percent of the customers come for exactly 2 of these 3 procedures?