The total mass of 5 bags of rice flour and 4 bags of bread flour is 169 kg. Each bag of rice flour has a mass of 17 kg.
- What is the total mass of 5 bags of rice flour?
- What is the total mass of 4 bags of bread flour?
- If each bag of bread flour has the same mass, what is the mass of 1 bag of bread flour?
(a)
Let the mass of 1 bag of rice flour and bread flour be R and B respectively.
Let 1 bag of rice flour be 1 R.
Let 1 bag of bread flour be 1 B.
5 R + 4 B = 169
1 R = 17
Mass of 5 bags of rice flour
= 5 x 17
= 85 kg
(b)
Mass of 4 bags of bread flour
= 169 - 85
= 84 kg
(c)
Mass of 1 bag of bread flour
= 84 ÷ 4
= 21 kg
Answer(s): (a) 85 kg; (b) 84 kg; (c) 21 kg