Bachal is three times as old as his son today .Five years ago ,he was four times as old as his son. How old is Bachal today?

32 years

30 years

40 years

45 years

According to the question, Bachal is now three times as old as his son,

so, x = 3y

five years before their ages would have been, x-5 and y-5. And the question says the Bachal was four times as old as his son,

x-5 = 4( y -5)

x-5= 4y -20

x-4y + 15 = 0

3y - 4y + 15 =0 , we already know x = 3y

y = 15 and x = 45

The Bachal is presently 45 and the son is 15