Question

: SIX years ago, Anika was thrice as old as Sonu. After eleven years, Anika will be twice as old as Sonu. How old are Anika and Sonu?

Answer 1

Answer:

Let us consider Present monu age = x yrs

Then five years ago monu age was = (x -5) yrs

Given five years ago sonu age was = 3(x -5) yrs = (3x -15) yrs

From above present age of sonu =3x -15+5 = 3x -10 yrs ----> equation 1

Ten years later monu age = (x + 10) yrs

Given 10 years later sonu age = 2(x + 10)yrs = 2x+20 yrs

From above present sonu age = 2x +20 -10 =2x +10 yrs ----> equation 2

As equation 1 and 2 both are for present age of sonu on equating both the equations

3x -10 = 2x +10 => 3x -2x = 10 + 10 => x = 20

Present age of monu = 20 yrs

Present sonu age can be calculated either by equation one are two

By equation 1:

Present age of sonu = 2x + 10 = 2×20 + 10 = 50 yrs

Answer 2

Step-by-step explanation:

Hence, The present age of Anu = x = 20 years. The present age of Sonu = y = 50 years.