The total mass of 3 bags of sugar and 9 bags of flour is 156 kg. Each bag of sugar has a mass of 16 kg.
- What is the total mass of 3 bags of sugar?
- What is the total mass of 9 bags of flour?
- If each bag of flour has the same mass, what is the mass of 1 bag of flour?
(a)
Let the mass of 1 bag of sugar and flour be S and F respectively.
Let 1 bag of sugar be 1 S.
Let 1 bag of flour be 1 F.
3 S + 9 F = 156
1 S = 16
Mass of 3 bags of sugar
= 3 x 16
= 48 kg
(b)
Mass of 9 bags of flour
= 156 - 48
= 108 kg
(c)
Mass of 1 bag of flour
= 108 ÷ 9
= 12 kg
Answer(s): (a) 48 kg; (b) 108 kg; (c) 12 kg