Question

6 numbers have average 9, if the 6th number is deducted the resulting average is 10. what is the 6th number ?​

Answer 1

Answer:

The sixth number is four.

Step-by-step explanation:

6 numbers average =9

total = 6*9 = 54

let the sixth number be x

(54-x)/5 = 10

54-x = 50

x = 54-50

x = 4

The sixth number is 4