Bear a two-digit number in mind.Without disclosing it, cunstruct a puzzle create two algebraic relations between the two digits of the number and solve the puzzle.
I am a number, tell my identity, three times of me, add fifty. You still need forty to have a triple century.
Let the number be x.
(3x+50)+40=3003x=300−903x=210x=70
Hence, this is the answer.