The total mass of 7 packets of flour and 5 packets of pepper is 234 kg. Each packet of flour has a mass of 12 kg.
- What is the total mass of 7 packets of flour?
- What is the total mass of 5 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 flour and pepper be F and P respectively.
Let 1 packet of flour be 1 F.
Let 1 packet of pepper be 1 P.
7 F + 5 P = 234
1 F = 12
Mass of 7 packets of flour
= 7 x 12
= 84 kg
(b)
Mass of 5 packets of pepper
= 234 - 84
= 150 kg
(c)
Mass of 1 packet of pepper
= 150 ÷ 5
= 30 kg
Answer(s): (a) 84 kg; (b) 150 kg; (c) 30 kg