Question

the mean of 10 numbers is 20 if 5 is subtracted from every no , find the new mean

Answer 1

give the mean of 10 number is 20
so the sum of numbers = 10×20= 200
if 5 is subtracted from every number than
number become 200 - (10×5)= 150


so the new mean = 150/10 = 15

hope it helps you

Rahul Aryan