Question

I WILL GIVE BRAINLY TO CORRECT ANSWER

Answer 1

Answer:

76%

Step-by-step explanation:

For the definition of mean we can write this equation

(75 + 86 + 83 + x)/4 = 80

(244 + x)/4 = 80

244 + x = 320

x =76 %

Answer 2

Hope this help x = 76% have a nice day