The total mass of 4 bags of flour and 6 packets of peppercorn was 42 kg. Each packet of peppercorn was 3 kg lighter than each bag of flour.
- What was the mass of 1 bag of flour?
- What was the mass of 1 packet of peppercorn?
(a)
Mass of a packet of peppercorn = 1 u
Mass of a bag of flour = 1 u + 3
4 x (1 u + 3) + 6 x 1 u = 42
4 u + 12 + 6 u = 42
4 u + 6 u = 42 - 12
10 u = 30
1 u = 30 ÷ 10 = 3
Mass of 1 bag of flour
= 3 + 3
= 6 kg
(b)
Mass of 1 packet of peppercorn = 1 u = 3 kg
Answer(s): (a) 6 kg; (b) 3 kg