The mass of a box with 10 mini-helicopters is 5.79 kg.
The mass of the empty box is 3.69 kg.
- What is the mass of each mini-helicopter?
- What is the mass of a box with 5 mini-helicopters?
(a)
Mass of 10 mini-helicopters
= 5.79 - 3.69
= 2.1 kg
Mass of 1 mini-helicopter
= 2.1 ÷ 10
= 0.21 kg
(b)
Mass of 1 box with 5 mini-helicopters
= 3.69 + 5 x 0.21
= 3.69 + 1.05
= 4.74 kg
Answer(s): (a) 0.21 kg; (b) 4.74 kg