Question

after 12 years manu will be 3 times as old as he was 4 years ago?​

Answer 1

Answer:

12 years is his present age.

Step-by-step explanation:

Let,  

the present age of Manu = x years

According to the condition,

x + 12 = 3(x - 4)

Therefore,

x + 12 = 3x - 12

24 = 2x  

x = 12 years.

Answer 2

Step-by-step explanation:

let the present age be x.

12+3x=x-4

12+4=3x-x

16=2x

16/2=x

8=x