Question

Nitika is 12 years older to her sister. Her sister is 9 years older to her friend's brother Dhruv. Dhruv is 9 years old. How old is Nitika?​

Answer 1

Answer:

dhruv age is 9 yrs.

Nikita's sister is 9 yrs older than dhruv,means 9+9=18.

Nikita is 12 years older to her sister,here 18+12=30.

so the answer is 30

Answer 2

Let x be age of nitika
Y be sister age
Y=9+ druv age
X=12+y
Dhruv is 9 year old
So y=9+9=18
X=12+18
=30