Question

Ten years ago, Karan was thrice as old as Shiva was but 10 years hence, he will be only twice as old. Find Shiva’s present age ?

Answer 1

Answer: Shiva is 30 years old

Step-by-step explanation:

Let x be shiva’s present age and y be karan’s Present age

So 10 years ago means

Shiva’s age = x-10

Karan’s age = y-10

Karan is thrice as old as shiva. So

y-10= 3(x-10)

y-10= 3x-30

3x-y=20    eq.1

After 10 years

Shiva’s age = x+10

Karan’s age = y+10

Karan will be twice as old as shiva. So

y+10= 2(x+10)

y+10= 2x+20

2x-y= -10     eq. 2

By equating eq.1 and eq.2

x= 30

So Shiva’s present  age is 30 years

Hope you understood

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