 
 <translate> Arabella spent 30 / 2 = 15 minutes on the second step. She took 30 + 15 = 45 minutes to learn the third step. Therefore, Arabella spent 30 + 15 + 45 = 90 minutes learning all three steps. So the answer is 90. <hau> Arabella ya yi amfani da 30 / 2 = mintuna 15 a mataki na biyu. Ta dauki minti 30 + 15 = 45 don koyon mataki na uku. Saboda haka, Arabella ta yi amfani da minti 30 + 15 + 45 = 90 wajen koyon dukan matakai uku. Amsar ita ce 90. 