Question
The sum of 12 numbers is 540. Find their average.
The correct answer is
45
Average Calculation for Numbers
The average (or arithmetic mean) of a set of numbers is found by dividing the sum of all the numbers by the count of the numbers in the set.
The formula is expressed as:
$ \text{Average} = \frac{\text{Sum of Numbers}}{\text{Count of Numbers}} $
Problem Data
- The sum of the numbers is given as 540.
- The count of numbers is 12.
Calculation Steps
Applying the formula with the provided values:
$ \text{Average} = \frac{540}{12} $
Performing the division calculation:
$ \text{Average} = 45 $
Thus, the average of the 12 numbers is 45.
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Important Questions from Average (Notes)
- Average age of 20 students of a class is 10 years. Average age of these students together with their five teachers is 14. The age of Ramesh Sir, one of their five teachers, is exactly the same as the average age of all their five teachers. The sum of the ages (in years) of all the students and Ramesh Sir is
- The average age of a group of boys and girls is 18 years. If the average age of boys is 20 years and that of girls is 15 years, then what is the percentage of boys in the group?
- If the average of six consecutive even numbers is 13, then the average of the next three even numbers is:
एक परिवार में, पिता और माता की औसत आयु 35 वर्ष है । पिता, माता और उनके इकलौते बेटे की औसत आयु 27 वर्ष है । बेटे की उम्र _____________ है।
- 5 क्रमागत संख्याओं का औसत n है । यदि अगली दो संख्याएँ भी शामिल कर ली जाएँ, तो 7 संख्याओं का औसत
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