The average of 3 consecutive natural numbers (which are in increasing order) is k. If two more consecutive numbers, just next to the first set of numbers, is added, then the new average becomes?
Question
The average of 3 consecutive natural numbers (which are in increasing order) is k. If two more consecutive numbers, just next to the first set of numbers, is added, then the new average becomes?
Solution
The average of 3 consecutive natural numbers is k. This means that the second number in this sequence is k.
Let's denote these numbers as (k-1), k, (k+1).
If we add two more consecutive numbers to this sequence, they will be (k+2) and (k+3).
The new sequence of numbers is (k-1), k, (k+1), (k+2), (k+3).
To find the new average, we add up all these numbers and divide by the total number of numbers.
So, the new average is [(k-1) + k + (k+1) + (k+2) + (k+3)] / 5 = (5k + 5) / 5 = k + 1.
Therefore, the new average becomes k + 1.
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