Respuesta :

Answer:

C. 10%

Step-by-step explanation:

This question can be solved using a rule of three.

1000 sales is 100% = 1.

100 sales is 100*x%.

So

1000 sales - 1

100 sales - x

1000x = 100

x = 100/1000

x = 0.1

0.1*100 = 10%

So the correct answer is:

C. 10%