The total mass of 7 packets of rice flour and 4 packets of chicken powder is 199 kg. Each packet of rice flour has a mass of 13 kg.
- What is the total mass of 7 packets of rice flour?
- What is the total mass of 4 packets of chicken powder?
- If each bag of chicken powder has the same mass, what is the mass of 1 packet of chicken powder?
(a)
Let the mass of 1 packet of rice flour and chicken powder be R and C respectively.
Let 1 packet of rice flour be 1 R.
Let 1 packet of chicken powder be 1 C.
7 R + 4 C = 199
1 R = 13
Mass of 7 packets of rice flour
= 7 x 13
= 91 kg
(b)
Mass of 4 packets of chicken powder
= 199 - 91
= 108 kg
(c)
Mass of 1 packet of chicken powder
= 108 ÷ 4
= 27 kg
Answer(s): (a) 91 kg; (b) 108 kg; (c) 27 kg