 
<translate> A ranar farko, Alina ta aika saƙonni 120 - 20 = 100. Jimlar lambar don rana ta farko ita ce 100 + 120 = 220 saƙonni. A rana ta biyu, Lucia ta aika saƙonni 1 / 3 * 120 = 40. Alina ta aika saƙonni 100 * 2 = 200 a rana ta biyu. Jimlar a rana ta biyu ita ce 40 + 200 = sakonni 240. A cikin kwanaki uku, sun aika saƙonni 220 + 220 + 240 = 680. Saboda haka, amsar ita ce 680. <eng> On the first day, Alina sent 120 - 20 = 100 messages. The total number for the first day is 100 + 120 = 220 messages. On the second day, Lucia sent 1 / 3 * 120 = 40 messages. Alina sent 100 * 2 = 200 messages on the second day. The total for the second day is 40 + 200 = 240 messages. For the three days, they sent 220 + 220 + 240 = 680 messages.
Thus, the answer is 680. 