A container packed with 2 bags of bread flour weighs 8.34 kg. The same container when packed with 9 such bags of bread flour weighs 25.49 kg.
- Find the mass of 2 bags of bread 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 packet of bread flour be 1 P.
1 C + 2 P = 8.34 --- (1)
1 C + 9 P = 25.49 --- (2)
(2) - (1)
7 P = 25.49 - 8.34
7 P = 17.15
1 P = 17.15 ÷ 7 = 2.45
Mass of 2 bags of bread flour
= 2 x 2.45
= 4.9 kg
(b)
Mass of the empty container
= 8.34 - 4.9
= 3.44 kg
Answer(s): (a) 4.9 kg; (b) 3.44 kg