The total mass of 4 bags of sugar and 7 bags of chilli powder is 150 kg. Each bag of sugar has a mass of 20 kg.
- What is the total mass of 4 bags of sugar?
- What is the total mass of 7 bags of chilli powder?
- If each bag of chilli powder has the same mass, what is the mass of 1 bag of chilli powder?
(a)
Let the mass of 1 bag of sugar and chilli powder be S and C respectively.
Let 1 bag of sugar be 1 S.
Let 1 bag of chilli powder be 1 C.
4 S + 7 C = 150
1 S = 20
Mass of 4 bags of sugar
= 4 x 20
= 80 kg
(b)
Mass of 7 bags of chilli powder
= 150 - 80
= 70 kg
(c)
Mass of 1 bag of chilli powder
= 70 ÷ 7
= 10 kg
Answer(s): (a) 80 kg; (b) 70 kg; (c) 10 kg