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:

Answer: Option B

Explanation:

Let the ten's and unit digit be x and	8	respectively.
	x

Then,		10x +	8		+ 18 = 10 x	8	+ x
			x			x

10x² + 8 + 18x = 80 + x²

9x² + 18x - 72 = 0

x² + 2x - 8 = 0

(x + 4)(x - 2) = 0

x = 2.