The average of 18 numbers is 14. while calculating the average a number 37 is taken as 73 by mistake . find the correct average
Answers
Answered by
5
Hi ,
Total numbers ( T ) = 18
wrong average ( R ) = 14
Correct number ( C ) = 37
the number taken wrong ( r ) = 73
Correct average = [ ( T × R ) - r + C ]/T
= [ ( 18 × 14 ) - 73 + 37 ]/18
= [ 252 - 73 + 37 ]/18
= ( 289 - 73 )/18
= 216/18
= 12
Therefore ,
Correct average = 12
I hope this helps you.
: )
Total numbers ( T ) = 18
wrong average ( R ) = 14
Correct number ( C ) = 37
the number taken wrong ( r ) = 73
Correct average = [ ( T × R ) - r + C ]/T
= [ ( 18 × 14 ) - 73 + 37 ]/18
= [ 252 - 73 + 37 ]/18
= ( 289 - 73 )/18
= 216/18
= 12
Therefore ,
Correct average = 12
I hope this helps you.
: )
Similar questions