Crate B is 4 times as heavy as Crate C. Crate D is 7.97 kg heavier than Crate C. The total mass of Crate B and Crate C is 64 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
= 4 x 1 u
= 4 u
Mass of Crate D = 1 u + 7.97
Total mass of Crate B and Crate C
= 1 u + 4 u
= 5 u
5 u = 64
1 u = 64 ÷ 5 = 12.8
Mass of Crate C
= 1 u
= 12.8 kg
(b)
Mass of Crate D
= 1 u + 7.97
= 12.8 + 7.97
= 20.77 kg
Answer(s): (a) 12.8 kg; (b) 20.77 kg