The average of 10 numbers is 78, If the average of the first five numbers is 65 and the average of next four numbers is 92 then, find the last number.
1
67
2
77
3
87
4
97
The average of 10 numbers is 78, If the average of the first five numbers is 65 and the average of next four numbers is 92 then, find the last number.