Question

Five years ago, Rahul was three times as old as Rishi and 10 years later, Rahul would be twice as old as Rishi , then the age of Rahul and Rishi respectively is

Answer 1

Answer:

so,the age of rahul is 50 and age of rishi is 20

Answer 2

Answer:Rahul is 50 years and Rishi is 20 years

Step-by-step explanation: Let Rahul’s age be ‘y’ and Rishi’s age be ‘x’

Five years ago:

Rahul: y-5

Rishi: x-5

(y-5) =3(x-5)

y -5 = 3x -15

y = 3x -15 +5

y = 3x -10...............eqn. 1

Ten years later:

Rahul: y +10

Rishi: x +10

(y+10) = 2(x + 10)

y+10 = 2x + 20

y = 2x +10............eqn. 2

Subtract eqn. 2 from 1

y = 3x -10

- y = 2x +10

___________

0 = x - 20

20 = x

Sub. value of x in eqn. 2

y= 2(20) + 10

y= 40 +10

y= 50

Therefore Rahul, y is 50 years

and Rishi, x is 20 years.