Crate B is 3 times as heavy as Crate C. Crate D is 7.33 kg heavier than Crate C. The total mass of Crate B and Crate C is 78 kg.
- What is the mass of Crate C?
- What is the mass of Crate D?
(a)
Mass of Crate C = 1 u
Mass of Crate B
= 3 x 1 u
= 3 u
Mass of Crate D = 1 u + 7.33
Total mass of Crate B and Crate C
= 1 u + 3 u
= 4 u
4 u = 78
1 u = 78 ÷ 4 = 19.5
Mass of Crate C
= 1 u
= 19.5 kg
(b)
Mass of Crate D
= 1 u + 7.33
= 19.5 + 7.33
= 26.83 kg
Answer(s): (a) 19.5 kg; (b) 26.83 kg