Average of 18 numbers is 38 if 9 is added in total then what will be the average
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Concepts used :
1) Deriving conclusions from given equations and things.
2) Using the conclusions to find unknown value.
3) Forming equations
4) Solving equation
5) Substituting the values to a variable
6) Formula to calculate average
Average = Sum of terms / No. of terms
Remember : Average changes when a new no. is added
1) Deriving conclusions from given equations and things.
2) Using the conclusions to find unknown value.
3) Forming equations
4) Solving equation
5) Substituting the values to a variable
6) Formula to calculate average
Average = Sum of terms / No. of terms
Remember : Average changes when a new no. is added
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