Question

find x, if the mean of 0, 10, x, 15, 20 is 6​

Answer 1

Answer:

mean of 0,10,x,15,20 is

(0+10+x+15+20)/5

=(x+45)/5

according to question,(x+45)/5=6

=> x+45=30

=> x= 30-45

=> x= -15

so, x= -15