Box M is 4 times as heavy as Box N. Box P is 7.99 kg heavier than Box N. The total mass of Box M and Box N is 51 kg.
- What is the mass of Box N?
- What is the mass of Box P?
(a)
Mass of Box N = 1 u
Mass of Box M
= 4 x 1 u
= 4 u
Mass of Box P = 1 u + 7.99
Total mass of Box M and Box N
= 1 u + 4 u
= 5 u
5 u = 51
1 u = 51 ÷ 5 = 10.2
Mass of Box N
= 1 u
= 10.2 kg
(b)
Mass of Box P
= 1 u + 7.99
= 10.2 + 7.99
= 18.19 kg
Answer(s): (a) 10.2 kg; (b) 18.19 kg