Crate H is 3 times as heavy as Crate J. Crate K is 6.56 kg heavier than Crate J. The total mass of Crate H and Crate J is 42 kg.
- What is the mass of Crate J?
- What is the mass of Crate K?
(a)
Mass of Crate J = 1 u
Mass of Crate H
= 3 x 1 u
= 3 u
Mass of Crate K = 1 u + 6.56
Total mass of Crate H and Crate J
= 1 u + 3 u
= 4 u
4 u = 42
1 u = 42 ÷ 4 = 10.5
Mass of Crate J
= 1 u
= 10.5 kg
(b)
Mass of Crate K
= 1 u + 6.56
= 10.5 + 6.56
= 17.06 kg
Answer(s): (a) 10.5 kg; (b) 17.06 kg