A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is?	Choose the correct choice: A) 1 B) 2 C) 6 D) 8 E) 9

Rationale: let the ten ' s and unit digit be x and 8 respectively . x then , 10 x + 8 + 18 = 10 x 8 + x x x 10 x 2 + 8 + 18 x = 80 + x 2 9 x 2 + 18 x - 72 = 0 x 2 + 2 x - 8 = 0 ( x + 4 ) ( x - 2 ) = 0 x = 2 option b
Answer: B