The average amount with a group of seven numbers is Rs. 30. If the newly joined member has Rs. 70 with him, what was the average amount with the group before his joining the group?\nOptions:\n(A) s. 25.6\n(B) s. 70/3\n(C) s. 16.6\n(D) s. 26/3\n(E) s. 25 OK. Let's think. Some random thoughts first:
User
Total members in the group = 7\nAverage amount = Rs. 30\nTotal amount with them = 7 * 30 = Rs. 210\nOne number has Rs. 70. So, the amount with remaining 6 people = 210 - 70 = Rs. 140\nThe average amount with them = 140/6 = Rs. 70/3 The answer: (B).
Assistant