Question

The average of 10 numbers is calculated as 15. it is discovered later on that while value calculating the average, one number is namely 36 was wrongly read as 26. the correct average is?

Answer 1

Average of ten numbers = (sum of 10 numbers)/10

15 = (sum of 10 numbers)/10

15*10 = sum of 10 numbers

150 =sum  of 10 numbers 

____________________________



Later on, one number was written wrong as 26, 

So, Now,

correct sum of numbers is  = 150-26+36
                                            = 150 + 10

                                            = 160


Now,

Correct Average = (sum of 10 numbers)/10

Correct average = $\frac{160}{10}$

Correct average = $\frac{16}{1}$

Correct Average = 16


i hope this will help you


-by ABHAY