⟩ Peter and Paul were friends. After six years Paul will be twice as old as Peter was when peter was as old as Paul. If sum of their ages is 36 find the age of Peter?
Peter + Paul = 36
in 6 years
Peter + 2 Peter = 42
So
Peter = 14 (in 6 years)
So now
Peter = 8
and
Paul = 22 (36-8)