Pink color has the smallest slice out of all colors. So, pink is approximately 1/8th of the customers
Black +Grey + pink are making about 50% or half of pie chart. In the remaining 50%, approximately 20% is blue, so we are left with only 30% for white+other. Hence, white+others is about 30%
For the other part, pink slice size is less than half of blue slice size. Blue slice size is 18%, so half of 18% is 9% and pink is less than half of 18% So, only possible answer is 6%
As preparation for designing a new line of business wear, a clothing manufacturer asked a large sample of department store customers, "What is your favorite color of dress shirt?" The pie chart below summarizes their responses. (a) Which color was chosen by approximately one-eighth of the customers?
Black
Grey
pink