Question

The average of a certain number of observations is
40. When two observations 27 and 42 are replaced
with 84 and 36, the average is increased by 3. Find
the number of observations:
(1) 25
(2) 21
(3) 10
(4) 17
(5) 35​

Answer 1

Answer:

1

Step-by-step explanation:

40+42+..........….........………