Question

average of 10,20,30,X and 50
is 30 then find the value of X.​

Answer 1

Answer:

X = 40

Explanation:

average = mean = (10+20+30+X+50) ÷ 5

=> 30 = (110+X) ÷ 5

=> 30×5 = 110+X

=> X + 110 = 150

=> X = 150-110

=> X = 40

Answer 2

Answer:

hope it helps ya

Explanation:

The average of 10, 30, and 50 is .

The average of 20, 40 and x must be 30-5=25, so the sum of these 3 numbers must be 3*25=75 --> 20+40+x=75 --> x=15.