Seven persons- A, B, C, D, E, F and G have different weights but not necessarily in the same order.
The weight of the third heaviest person is 126kg.
The weight of only D is less than C.
| | Weight |
| Heaviest | | |
| | |
| | 126kg |
| | |
| | |
| C | |
| Lightest | D | |
E is heavier than A and lighter than G.
G is not the heaviest person.
| Case 1 | Case 2 | Case 3 | Weight |
| Heaviest | | | | |
| G | G | G | |
| E | E | | 126kg |
| A | | E | |
| | A | A | |
| C | C | C | |
| Lightest | D | D | D | |
B is heavier than E and lighter than F.
Thus, Case 1 and Case 2 get cancelled.
| Case 3 | Weight |
| Heaviest | F | |
| G | |
| B | 126kg |
| E | |
| A | |
| C | |
| Lightest | D | |
The difference between the weight of B and F is 25kg.
Weight of B = 126kg
Weight of F = 126 + 25 = 151kg
| Heaviest | F | 151kg |
| G | |
| B | 126kg |
| E | |
| A | |
| C | |
| Lightest | D | |
The weight of C is 31kg less than the weight of A.
Weight of B is 18kg more than the weight of A.
Weight of B = 126kg
Weight of A = 126 - 18 = 108kg
Weight of C = 108 - 31 = 77kg
| Heaviest | F | 151kg |
| G | |
| B | 126kg |
| E | |
| A | 108kg |
| C | 77kg |
| Lightest | D | |
This is the final arrangement.
Age of C = 77kg
C + E = 198kg
Age of E = 198 - 77 = 121kg
E + G = 263kg
Age of G = 263 - 121 = 142kg
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