 <translate> If there were 150 members in the group before the admin removed 20, then 150 - 20 = 130 members remained after 20 were removed. The group members each posted 50 messages in a day, a total of 50 * 130 = 6500 messages. In a week, with seven days, the group members would have posted 6500 * 7 = 45500 messages. Final answer: 45500. <yor> Ti o ba jẹ pe awọn ọmọ ẹgbẹ 150 wa ninu ẹgbẹ ṣaaju ki alakoso naa yọ 20, lẹhinna 150 - 20 = awọn ọmọ ẹgbẹ 130 ku lẹhin ti a yọ 20. Àwọn ọmọ ẹgbẹ́ náà kọ ọ̀kọ̀ọ̀kan wọn ránṣẹ́ àádọ́ta ọ̀rọ̀ ní ọjọ́ kan, àpapọ̀ rẹ̀ jẹ́ 50 * 130 = 6500 ọ̀rọ̀. Ni ọsẹ kan, pẹlu ọjọ meje, awọn ọmọ ẹgbẹ ẹgbẹ yoo ti fi awọn ifiranṣẹ 6500 * 7 = 45500 ranṣẹ. Ìdáhùn tó péye: 45500. 