A question for you all. It is not a challenge. Q/. when I was 4 years old then my sister was half of me and when I will be of 80 then my sister's age will be ? you can give a short answer also.
Answers
Step-by-step explanation:
When I was 4 my sister was half my age. Now I am 100. How old is my sister now?
Solution:
Method 1: Using passed years for both persons.
Relationship of my age and my sister’s age:
When I was 4 years:
My sisters’s age : My age/ 2 = 4/2=2 years
Our age difference : 4 - 2 = 2 years
At present:
When I am 100 years old:
I am 100 years old after passing 100–4= 96 years.
96 years passed for my sister also.
She was 2 years old when i was 4 years old. Therefore she is now 2 + 96= 98 years old.
Method 2: Using Age Difference.
Relationship of my age and my sister’s age:
When I was 4 years:
My sisters’s age : My age/ 2 = 4/2=2 years
Our age difference : 4 - 2 = 2 years
At present:
When I am 100 years old:
My sister is 2 years younger than me
My sister’s age = My present age - our age difference
My sister’s age = 100 - 2 = 98 years
My sister’s age = 98 years after passing 96 years.