Answer:
150 people
Step-by-step explanation:
20/50 = 40%So 40% are wearing hats and 60% aren't
0.6=60%
250x0.6= 150
3x+3y-5x-y
(3x-5x) +(3y-y)
(3-5)x + (3-1)y
-2x+2y
There's no equation. You must've forgotten to put the file in the question.