Crate W is 4 times as heavy as Crate X. Crate Y is 5.78 kg heavier than Crate X. The total mass of Crate W and Crate X is 42 kg.
- What is the mass of Crate X?
- What is the mass of Crate Y?
(a)
Mass of Crate X = 1 u
Mass of Crate W
= 4 x 1 u
= 4 u
Mass of Crate Y = 1 u + 5.78
Total mass of Crate W and Crate X
= 1 u + 4 u
= 5 u
5 u = 42
1 u = 42 ÷ 5 = 8.4
Mass of Crate X
= 1 u
= 8.4 kg
(b)
Mass of Crate Y
= 1 u + 5.78
= 8.4 + 5.78
= 14.18 kg
Answer(s): (a) 8.4 kg; (b) 14.18 kg