A container packed with 2 bags of rice flour weighs 4.39 kg. The same container when packed with 15 such bags of rice flour weighs 21.55 kg.
- Find the mass of 2 bags of rice flour in kg.
- Find the mass of the empty container in kg.
(a)
Let the mass of 1 container be 1 C.
Let the mass of 1 box of rice flour be 1 B.
1 C + 2 B = 4.39 --- (1)
1 C + 15 B = 21.55 --- (2)
(2) - (1)
13 B = 21.55 - 4.39
13 B = 17.16
1 B = 17.16 ÷ 13 = 1.32
Mass of 2 bags of rice flour
= 2 x 1.32
= 2.64 kg
(b)
Mass of the empty container
= 4.39 - 2.64
= 1.75 kg
Answer(s): (a) 2.64 kg; (b) 1.75 kg