Question 917742: How can I get the numbers used in a average?
(ex. What are the 2 numbers used to get a average of 50?)
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! You need more data.
For example, if one of two numbers used to get a average of 50 is 70, you can calculate that the other number must be 30.
If you have an average 2 out of 3 numbers used to get that average, you can calculate the missing number.
The average of a set of values is the sum of all the values, divided by the number of values.
The sum of 30 and 70 is 100.
The average of 30 and 70 is 100 divided by 2, which is 50.
If the average of 32, 36, and another number is 33,
then the sum divided by 3 is 33, so the sum must be 3 times 33, which is 99.
Since 32+36=68, the third number must be 99-68=31.
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