 
 <translate> 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. <ibo> N'ụbọchị mbụ, Alina zipụrụ ozi 120 - 20 = 100. Ọnụ ọgụgụ nke ụbọchị mbụ bụ 100 + 120 = 220 ozi. N'ụbọchị nke abụọ, Lucia zigara 1 / 3 * 120 = ozi 40. Alina zipụrụ ozi 100 * 2 = 200 n'ụbọchị nke abụọ. Ngụkọta maka ụbọchị nke abụọ bụ ozi 40 + 200 = 240. N'ime ụbọchị atọ ahụ, ha zipụrụ ozi 220 + 220 + 240 = 680. N'ihi ya, azịza ya bụ 680. 