Question

Five years ago, Anu was thrice as old as Sonu. After ten years, Anu will be twice as old as Sonu. How old is Sonu now?​

Answer 1

Answer:

3

Step-by-step explanation:

In five years ago anu was thrice than sonu after ten years anu was twice than sonu so anu will be 6 years and age of sonu was 6-3=3 now sonu age is 3

Answer 2

Answer:

Let ,Sonu's age be x

Anu's age be y

1st equation:-

3(x-5)=y-5

3x-15=y-5

3x-y=10_______(i)

2nd equation:-

2(x+10)=y+10

2x+20=y+10

2x-y=-10_______(ii)

Multiplying eq(i) and (ii) by 1 we get,

3x - y = 10

2x - y =-10

(-) (+) (+)

-----------------

x=20

Putting the value of x in eq(i) we get,

3x-y=10

3×20-y=10

-y=10-60

-y=-50

Therefore, y=50

Therefore, Anu is 50yrs old now.