The total mass of 2 bags of sesame seed and 8 packets of soya bean was 32 kg. Each packet of soya bean was 6 kg lighter than each bag of sesame seed.
- What was the mass of 1 bag of sesame seed?
- What was the mass of 1 packet of soya bean?
(a)
Mass of a packet of soya bean = 1 u
Mass of a bag of sesame seed = 1 u + 6
2 x (1 u + 6) + 8 x 1 u = 32
2 u + 12 + 8 u = 32
2 u + 8 u = 32 - 12
10 u = 20
1 u = 20 ÷ 10 = 2
Mass of 1 bag of sesame seed
= 2 + 6
= 8 kg
(b)
Mass of 1 packet of soya bean = 1 u = 2 kg
Answer(s): (a) 8 kg; (b) 2 kg