20% people were satisfied with the car
Step-by-step explanation:
Percentage of a certain quanitity is calculated by using the following formula

Given
Total people surveyed = 2800
People satisfied with the car = 560
So,

Hence,
20% people were satisfied with the car
Keywords: Percentage
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ANSWER
My answer is in the photo above
Answer:
The marked price of an article is Rs. x, and selling price is Rs. y
Price difference = Rs. (x−y)
Now, on Rs. x, there is a discount of Rs. (x−y)
Thus, on Rs. 100, there will be a discount of Rs.
x
(x−y)
×100%.
Sorry it's a bit messy. but I hope you understand and it will help