the mean of five number is 10 if each number is decreased by 3,mean of the new numbers - Maths - Statistics

Question

the mean of five number is 10 if each number is decreased by 3,mean
of the new numbers

Manbar Singh · Accepted Answer

Let a, b, c, d and e be the 5 numbers
Now
 mean = 10⇒a+b+c+d+e5 = 10⇒a+b+c+d+e = 50Now, when each number is decreased by 3, we getnew mean = a-3+b-3+c-3+d-3+e-35 = a+b+c+d+e  - 155 = 50-155 = 355 = 7

the mean of five number is 10. if each number is decreased by 3,mean of the new numbers.