20 pounds per unit, If you buy two plates the price would fall to 16,50 pounds per unit, and if three buy would fall to 15 pounds per plate.
20 paundi kwa Kitengo cha, Kama unaweza kununua mabamba mawili bei bila kuanguka kwa 16,50 paundi kwa Kitengo cha, na kama watatu kununua bila kuanguka 15 paundi kwa sahani.