The total mass of 3 packets of green bean and 7 bags of corn starch was 44 kg. Each bag of corn starch was 8 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 corn starch?
(a)
Mass of a bag of corn starch = 1 u
Mass of a packet of green bean = 1 u + 8
3 x (1 u + 8) + 7 x 1 u = 44
3 u + 24 + 7 u = 44
3 u + 7 u = 44 - 24
10 u = 20
1 u = 20 ÷ 10 = 2
Mass of 1 packet of green bean
= 2 + 8
= 10 kg
(b)
Mass of 1 bag of corn starch = 1 u = 2 kg
Answer(s): (a) 10 kg; (b) 2 kg