An online store holds a sale. Of the 400 customers who make purchases during the sale, 20 use a coupon. What percent of the customers do not use a coupon?

5%

Step-by-step explanation:

20/400

10/200

5/100

5%

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.