Question

The mean of 20,28,22,33,25 and a is 30. Find the value of a

Answer 1

Answer:

a=52

Step-by-step explanation:

There are 6 terms

Sum=20+28+22+33+25+a=128+a

Mean=30

Mean=Sum/Count

30=(128+a)/6

a=180-128

a=52

Answer 2

Answer:

( 20 + 28 + 22 + 33 + 25 + a) / 6 = 30

( 128 + a) / 6 = 30

128 + a = 30 x 6

a = 180 - 128 = 52