Box B is 4 times as heavy as Box C. Box D is 7.45 kg heavier than Box C. The total mass of Box B and Box C is 63 kg.
- What is the mass of Box C?
- What is the mass of Box D?
(a)
Mass of Box C = 1 u
Mass of Box B
= 4 x 1 u
= 4 u
Mass of Box D = 1 u + 7.45
Total mass of Box B and Box C
= 1 u + 4 u
= 5 u
5 u = 63
1 u = 63 ÷ 5 = 12.6
Mass of Box C
= 1 u
= 12.6 kg
(b)
Mass of Box D
= 1 u + 7.45
= 12.6 + 7.45
= 20.05 kg
Answer(s): (a) 12.6 kg; (b) 20.05 kg