Question

average of eight number is 370 if ninth number is 40 more than the average of 9 number then average of 9 number is​

Answer 1

Answer:

Step-by-step explanation:

74.44

Answer 2

Average of 9 numbers is 375

Step-by-step explanation:

Given: Average of eight number is 370

Let the ninth number be x

Average of eight number A' = (sum of eight number)/8

S' = 370*8

S' = 2960

=> x = 40 + average of  9 numbers

=> x = 40 + ( S' + x)/9

=> 9x = 360 + 2960 + x

=> x = 415

Average of 9 numbers is 415 - 40 = 375