The total mass of 2 packets of rice flour and 7 packets of pepper is 192 kg. Each packet of rice flour has a mass of 19 kg.
- What is the total mass of 2 packets of rice flour?
- What is the total mass of 7 packets of pepper?
- If each bag of pepper has the same mass, what is the mass of 1 packet of pepper?
(a)
Let the mass of 1 packet of rice flour and pepper be R and P respectively.
Let 1 packet of rice flour be 1 R.
Let 1 packet of pepper be 1 P.
2 R + 7 P = 192
1 R = 19
Mass of 2 packets of rice flour
= 2 x 19
= 38 kg
(b)
Mass of 7 packets of pepper
= 192 - 38
= 154 kg
(c)
Mass of 1 packet of pepper
= 154 ÷ 7
= 22 kg
Answer(s): (a) 38 kg; (b) 154 kg; (c) 22 kg