Question

1. The mean of 31 results is 60. If the mean of the first 16 results is 58 and that of the last 16
results is 62, find the 16th result.​

Answer 1

Answer:

It is given that Mean of 31 results = 60 So the total sum = 31 (60) = 1860

We know that

Mean of first 16 results = 58

So the total sum = 16 (58) = 928

Mean of last 16 results = 62

So the total sum = 16 (62) = 992

We get the 16th result = total sum of first 16 results + total sum of last 16 results – total sum of 31 results

By substituting the values

16th result = 928 + 992 – 1860

On further calculation 16th result = 1920 – 1860 = 60

Therefore, the 16th result is 60.

Step-by-step explanation:

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Answer 2

Answer:

2 atachments are given please see!!