Question

5 years ago, sunny was 3 tjmes as old as minu. 10 years , sunny would be twice as old as minu. How old are they now?​

Answer 1

Answer:

let minu age X

before 5 years

then sunny age=3(X-5)

after 10 yrs

3X-10

Answer 2

Answer:

Minu present age = 20

Sunny present age = 15

Step-by-step explanation:

Let Minu's present age be x

Let Sunny's present age be y

Case 1 :

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

3x - 15 = y - 5

3x - y = 15 - 5

3x - y = 10(1)

(x + 10)2 = y + 10

2x + 20 = y + 10

20 - 10 = y - 2x

y - 2x = 10

-2x + y = 10(2)

Or y = 10 + 2x

Adding (1) and (2) we get

x = 20

Putting value of x in, y = 10 + 2x

we get y = 50

Hope this helps

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