Solution-1 containing 30wt%NaCl (Sodium Chloride) is flowing at the rate of 10kg/min and gets mixed with the Solution-2 containing 20 wt\% NaCl (Sodium Chloride) flowing at the rate 5kg/min in a mixer. If the product is leaving the mixer at the rate of 15kg/min, what is the wt\% of NaCl (Sodium Chloride) in the product? Select one: a. 46.66% b. 36.66% c. 16.66% d. 26.66%