Question

Sum of 5 observations is 20+x and its mean is 20 then x =​

Answer 1

Answer:

80 ......................

Answer 2

Step-by-step explanation:

Sum of five observations =20+x

Mean of five observations =x

According to question,

20+x/5=x

20+x=5x

x-5x= -20

-4x= -20

x= -20/-4

x=5