Question

the mean of set of 4 number is 19 what would be the mean if each of the number is decreased by11

Answer 1

let the 4 numbers be a, b,c,d

given: (a+b+c+d)÷4=19

if all the 4 numbers is decreased hy 11

new mean=(a+b+c+d-36)÷4

=19-9

=10

therefore the mean of four numbers whose initial mean is 19 and if each of these numbers are decreased by 11 the final mean becomes 10

Answer 2

Answer:

30

Step-by-step explanation:

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