Question

the mean of 10 number is 20.if 5is subtracted from every number,what will be the new mean
​

Answer 1

Step-by-step explanation:

Given that the mean of 10 number is 20

So the sum of 10 numbers=10*20=200

If 5 subtracted from every number the sum becomes 200-(10*5)=150

So, the new mean=150/10=15