Question
The average weight of 16 people in a group is 75 kg. If
the heaviest person who weighs 95 kg is replaced by a new person, and the average weight of the group drops to 73 kg, what is the weight of the new person?Solution
Total weight of 16 people = 16 × 75 = 1200 kg. Let the weight of the new person be y kg. Removing the heaviest person (95 kg) and adding the new person: New total weight = 1200 - 95 + y New average weight with the new person is 73 kg 1200 - 95 + y = 73 × 16 1200 - 95 + y = 1168 y = 1168 - 1105 y = 63 = 63 kg
8 9 30 155 ? 9837 108218
...23 48 98 198 ? 798
...3720 3842 ? 4092 4220 4350
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the questions...
73920, 9240, ?, 220, 44, 11
20, 30, 40, 55, ?, 160
1600, 330, 48, 23.2, ?, 31.0464
100 180 294 448 648 ?
11 33 66 112 173 ? .
5 10 30 150 950 11550
...
