First, you must add all the people who picked the colors, that would be 15.
then, you must divide 90 by 15 to find their difference (6)
multiply the original amount of yellow-preferred people by 6 (12)
and voila! (the answer is 12)
Please check with classmates and try to see if anything is wrong.
Answer: a
Step-by-step explanation:

This eliminates all the options except for a.
Answer:
A
Step-by-step explanation:
the graph does not mention pens (exept in the title)
so not c or d
so it has to be A
(180(total angle measure of triangle)-50(EFG))/2(the other two angles have the same measure)=65
The angle CGE=180=CGF+EGF
180-65=CGF
115=CGF