The average amount with a group of seven numbers is Rs. 30. If the newly joined member has Rs. 75 with him, what was the average amount with the group before his joining the group?\nOptions:\n(A) s. 25.6\n(B) s. 45/2\n(C) s. 16.6\n(D) s. 26\n(E) s. 25/2 Hmmm, my stream of consciousness:
User
Total members in the group = 7\nAverage amount = Rs. 30\nTotal amount with them = 7 * 30 = Rs. 210\nOne number has Rs. 50. So, the amount with remaining 6 people = 210 - 75 = Rs. 135\nThe average amount with them = 135/6 = Rs. 45/2 So, the answer is (B).
Assistant