Question

a man age is 42 years and his son age is 12 years. after how many years will the man be thrice as old as his son??

Answer 1

a man who is 42 years old has a son of 12 years old. in how many years will the father be twice as old as his son 

Let the amount of years be Y 

Then: 42 + Y = 2(12 + Y) 

42 + Y = 24 + 2Y 

42 - 24 = Y 

Y, or amount of years it'll take for the man to be twice his son's age = 18

Ok make me brainlist.