Question

there are 60 number each number is subtracted by 67 and the new mean of the number so obtain is found to be -3.3 the mean of given number is

Answer 1

63.7
3 answer is correct

Answer 2

let x be sum of the 60 numbers

so (60 - 60*67)/60 = -3.3

solving this we get  x = 3822

so mean of given numbers = 3822/60 = 63.7