Given 10 scores of 68, 68, 68, 68, 68, 68, 68, 68, 68, 68, what should be score number 11 in order to attain an average score of 70?
Setup Average Equation:
| Average = | Sum of our 10 numbers + unknown score of x |
| Total Numbers |
| 70 = | 68 + 68 + 68 + 68 + 68 + 68 + 68 + 68 + 68 + 68 + x |
| 11 |
Cross Multiply
68 + 68 + 68 + 68 + 68 + 68 + 68 + 68 + 68 + 68 + x = 70 x 11x + 680 = 770
Subtract 680 from both sides of the equation to isolate x:
x + 680 - 680 = 770 - 680x = 90
You have 2 free calculationss remaining
What is the Answer?
x = 90
How does the Missing Average Calculator work?
Free Missing Average Calculator - Given a set of scores and an average, this calculates the next score necessary to attain that average
This calculator has 2 inputs.
This calculator has 2 inputs.
What 1 formula is used for the Missing Average Calculator?
Average = (your Sum of all numbers + unknown score of x)/Total Numbers
For more math formulas, check out our Formula Dossier
For more math formulas, check out our Formula Dossier
What 3 concepts are covered in the Missing Average Calculator?
- average
- A number expressing the central value of a set
Sum of Values/n - missing average
- A score or rank required to reach a certain average
- number
- an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
Example calculations for the Missing Average Calculator
Missing Average Calculator Video
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