Question

prathima is twice older than her sister in 5 years time, she will be 2 years older than her sister. find how old are they both now?

Answer 1

Let Prathima's age be 2x.
So, sister's age=x.
After 5 years,
Prathima's age=2x+5
Sister's age= x+5
According to the question,
(2x+5)=(x+5)+2
x=2.
So, Prathima's age is 2 years and her sister's age is 1 year.

Answer 2

Heya !!!



Let the age of prathima's sister be X years.



Age of prathima = 2X years.


After 5 years age of her sister = ( X + 5 ) years


After 5 years age of prathima = ( 2X + 5 ) yrs.


According to question,



Age of prathima after 5 years = ( Age of prathima's sister + 2 ).


2X + 5 = X + 5 + 2


2X - X = 7 - 5



X = 2.



Present age of prathima's sister = X = 2 years.



and,

Present age of prathima = 2X = 2 × 2 = 4 years.


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