13, 6, 2 =20 4, 9, 5=11 9, 2, 3=25 then 15, 5, 4=? puzzles answer

Answer: 55

Explanation: #Puzzle_answer: 13 x 2 - 6= 26-6= 20, 5 x 4 - 9= 20-9= 11, 9 x 3 - 2= 27-2= 25, And finally 15x4 - 5= 60-5= 55 Cheers !!!