Question

The mean of 5 numbers is 18. If one number is excluded, their mean is 16.

Find the excluded number.

4) Mrs Jain is 27 years older than her daughter Nilu. After 8 years she will be​

Answer 1

Answer:

Correct option is

B

26

Mean of 5 numbers =18

⇒ Sum of these 5 numbers =18×5=90

Let number that has been excluded be x

New mean =490−x=16

Solving this, we get

90−x=64

∴x=26

Step-by-step explanation:

4. So, the present age of Nilu = x = 19 years, And the present age of Nilu's mother that is Mrs Jain = x+ 27 = 19 + 27 = 46 years.