Enter the average and the value of one of the numbers into the Reverse Average Calculator. The calculator will evaluate and display the value of the unknown number.
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Reverse Average Formula
The following formula is used to calculate the Reverse Average.
V1 = 2*AV-V2
- Where V1 is the missing number value
- AV is the average
- V1 is the value of the known number value
To calculate an initial value from an average, multiply the average by 2, then subtract the final/second value.
How to Calculate Reverse Average?
The following example problems outline how to calculate Reverse Average.
Example Problem #1:
- First, determine the average.
- The average is given as: 30.
- Next, determine the value of one of the numbers.
- The value of one of the numbers is provided as: 20.
- Finally, calculate the Reverse Average using the equation above:
V1 = 2*AV-V2
The values given above are inserted into the equation below and the solution is calculated:
V1 = 2*30-20 = 40
Example Problem #2:
For this problem, the variables required are provided below:
average = 40
value of one of the numbers = 10
Test your knowledge using the equation and check your answer with the calculator above.
V1 = 2*AV-V2 = ?
