Question

please answer asap!!!!
Arun’s mean score in the first three examination is 86.

What is the sum of the scores for the first three examination?​

Answer 1

86×3= 258

258 is the answer

Answer 2

Answer:

(87+88+92+ X) /4 =90 for example

Step-by-step explanation:

now you need to solve for X. the unknown

87 + 88 + 92 = 267

267 + X = 360

X - 360 = 267

= 93