Four children made the following statements.
Violet : Aria is 2 kg heavier than David.
David : Our masses are in consecutive order.
Jackson : The average of Violet's mass and my mass is 34 kg.
Aria : I am the heaviest.

What is the total mass of Jackson, Aria and Violet ?
Order of the mass of 4 children:
_____ , David, _____ , Aria (Heaviest)

Total mass of Jackson and Violet
= 2 x 34
= 68 kg

For Jackson and Violet,
Mass of the lighter one = 1 u
Mass of the heavier one = 1 u + 2

Total mass of Jackson and Violet
= 1 u + 1 u + 2
= 2 u + 2

2 u + 2 = 68
2 u = 68 - 2
2 u = 66

1 u = 66 ÷ 2 = 33

The mass of the four children in consecutive order is 33, 34, 35 and 36.

Total mass of Jackson, Aria and Violet
= 33 + 35 + 36
= 104

Answer(s): 104 kg