Question

The average of ten numbers is 13. if the sum of nine is 122 find the tenth number

Answer 1

Answer:

122+x/10=13

122+x=13*10

122+x=130

x=130-122

x=8

Step-by-step explanation:

average of 10 no. is 13

average of 9 no. is 122

avg. =sum of total no. /total no. of observation

Answer 2

Answer:

550

Step-by-step explanation:

because by multiplying 10x55 we get 550 please mark me as brainiest