Crate Z is 4 times as heavy as Crate A. Crate B is 7.63 kg heavier than Crate A. The total mass of Crate Z and Crate A is 71 kg.
- What is the mass of Crate A?
- What is the mass of Crate B?
(a)
Mass of Crate A = 1 u
Mass of Crate Z
= 4 x 1 u
= 4 u
Mass of Crate B = 1 u + 7.63
Total mass of Crate Z and Crate A
= 1 u + 4 u
= 5 u
5 u = 71
1 u = 71 ÷ 5 = 14.2
Mass of Crate A
= 1 u
= 14.2 kg
(b)
Mass of Crate B
= 1 u + 7.63
= 14.2 + 7.63
= 21.83 kg
Answer(s): (a) 14.2 kg; (b) 21.83 kg