1.

The average of 18 numbers is 14. while calculating the average a number 37 is taken as 73 by mistake . find the correct average

Answer»

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.

: )



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