Question

the mean of 5 number is 20.Removed one numberthen the average becomes 15 then find the value of the removed number​

Answer 1

Step-by-step explanation:

the mean of 5 numbers is 20

5×20=100

remove one number and their mean=15

15×4=60

remove numbers value =100-60=40

Answer 2

Answer:

40

Step-by-step explanation:

(a+b+c+d+e)/5 = 20

let a removed

(b+c+d+e)/4 = 15

b+c+d+e = 60

(a+60)/5 = 20

a = 40