Question

The mean of 8 number is 25 if 5 is subtracted what will the new mean

Answer 1

Answer:

24.37

Step-by-step explanation:

mean of 8 numbers is 25

hence total of 8 numbers = 8 x 25 =200

if 5 is subtracted

then 200 - 5 = 195

hence mean of those numbers = 195 / 8 =24.37

Answer 2

Answer:

24.375

27.857

Step-by-step explanation:

mean of 8 numbers = 25

sum of numbers = numbers * mean

sum of 8 numbers = 8 * 25= 200

now question says if 5 is substracted

there can be two case

case 1 just 5 is reduced from total

case 2 - one number with vale 5 is reduced from set of 8 number

case 1

new mean = (200-5)/8 = 195/8

= 24.375

case 2

new mean = (200-5)/(8-1)

= 195/7

= 27.857