The average of 9 items is 79. If one new item whose value is 59 is also included in the series, find average of all the 10 items.A77B80C81D83
Question
The average of 9 items is 79. If one new item whose value is 59 is also included in the series, find average of all the 10 items.A77B80C81D83
Solution
Sure, here is the step by step solution:
Step 1: The average of 9 items is 79. So, the total sum of these 9 items is 79 * 9 = 711.
Step 2: Now, a new item whose value is 59 is included in the series. So, the total sum of all the 10 items is 711 + 59 = 770.
Step 3: The average of all the 10 items is the total sum divided by the number of items. So, the average is 770 / 10 = 77.
So, the answer is A77.
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