Crate X is 5 times as heavy as Crate Y. Crate Z is 7.25 kg heavier than Crate Y. The total mass of Crate X and Crate Y is 75 kg.
- What is the mass of Crate Y?
- What is the mass of Crate Z?
(a)
Mass of Crate Y = 1 u
Mass of Crate X
= 5 x 1 u
= 5 u
Mass of Crate Z = 1 u + 7.25
Total mass of Crate X and Crate Y
= 1 u + 5 u
= 6 u
6 u = 75
1 u = 75 ÷ 6 = 12.5
Mass of Crate Y
= 1 u
= 12.5 kg
(b)
Mass of Crate Z
= 1 u + 7.25
= 12.5 + 7.25
= 19.75 kg
Answer(s): (a) 12.5 kg; (b) 19.75 kg