The total mass of 6 packets of rice and 6 bags of maize was 30 kg. Each bag of maize was 3 kg lighter than each packet of rice.
- What was the mass of 1 packet of rice?
- What was the mass of 1 bag of maize?
(a)
Mass of a bag of maize = 1 u
Mass of a packet of rice = 1 u + 3
6 x (1 u + 3) + 6 x 1 u = 30
6 u + 18 + 6 u = 30
6 u + 6 u = 30 - 18
12 u = 12
1 u = 12 ÷ 12 = 1
Mass of 1 packet of rice
= 1 + 3
= 4 kg
(b)
Mass of 1 bag of maize = 1 u = 1 kg
Answer(s): (a) 4 kg; (b) 1 kg