The total mass of 2 packets of ground pepper and 2 bags of potato starch was 32 kg. Each bag of potato starch was 6 kg lighter than each packet of ground pepper.
- What was the mass of 1 packet of ground pepper?
- What was the mass of 1 bag of potato starch?
(a)
Mass of a bag of potato starch = 1 u
Mass of a packet of ground pepper = 1 u + 6
2 x (1 u + 6) + 2 x 1 u = 32
2 u + 12 + 2 u = 32
2 u + 2 u = 32 - 12
4 u = 20
1 u = 20 ÷ 4 = 5
Mass of 1 packet of ground pepper
= 5 + 6
= 11 kg
(b)
Mass of 1 bag of potato starch = 1 u = 5 kg
Answer(s): (a) 11 kg; (b) 5 kg