The total mass of 3 packets of green bean and 2 bags of brown rice was 45 kg. Each bag of brown rice was 5 kg lighter than each packet of green bean.
- What was the mass of 1 packet of green bean?
- What was the mass of 1 bag of brown rice?
(a)
Mass of a bag of brown rice = 1 u
Mass of a packet of green bean = 1 u + 5
3 x (1 u + 5) + 2 x 1 u = 45
3 u + 15 + 2 u = 45
3 u + 2 u = 45 - 15
5 u = 30
1 u = 30 ÷ 5 = 6
Mass of 1 packet of green bean
= 6 + 5
= 11 kg
(b)
Mass of 1 bag of brown rice = 1 u = 6 kg
Answer(s): (a) 11 kg; (b) 6 kg