Question

The mean marks of 24 students of a class is 64 .If one student whose marks are 89 is added to this class, find the mean of all 25 students​

Answer 1

Answer:

24 ×64 +89 and then ÷ 25.

ans 65

Answer 2

Answer:

65

Step-by-step explanation:

Formula of mean = sum of observation/total number of observation

Mean = 64+64+64+64+64+64...........(24 times)+89/25

Mean= 1536+89/25

Mean=1625/25

Mean= 65

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