Given scores of 74,78,63, what should the next score be in order to attain an average score of 80?
Given 3 scores of 74, 78, 63, what should be score number 4 in order to attain an average score of 80?
Setup Average Equation:
Average =
Sum of our 3 numbers + unknown score of x
Total Numbers
80 =
74 + 78 + 63 + x
4
Cross Multiply
74 + 78 + 63 + x = 80 x 4 x + 215 = 320
Subtract 215 from both sides of the equation to isolate x:
x + 215 - 215 = 320 - 215
x = 105
What is the Answer?
x = 105
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.
What 1 formula is used for the Missing Average Calculator?
Average = (your Sum of all numbers + unknown score of x)/Total Numbers
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
