 
 <translate> Nadine has 20 / 2 = 10 red pebbles. Thus, she has 20 + 10 = 30 pebbles. So the answer is 30. <hau> Nadine yana da 20 / 2 = 10 ja duwatsu. Saboda haka, tana da duwatsu 20 + 10 = 30. Amsar ita ce 30. 