The total mass of 5 bags of corn starch and 2 packets of sesame seed was 36 kg. Each packet of sesame seed was 3 kg lighter than each bag of corn starch.
- What was the mass of 1 bag of corn starch?
- What was the mass of 1 packet of sesame seed?
(a)
Mass of a packet of sesame seed = 1 u
Mass of a bag of corn starch = 1 u + 3
5 x (1 u + 3) + 2 x 1 u = 36
5 u + 15 + 2 u = 36
5 u + 2 u = 36 - 15
7 u = 21
1 u = 21 ÷ 7 = 3
Mass of 1 bag of corn starch
= 3 + 3
= 6 kg
(b)
Mass of 1 packet of sesame seed = 1 u = 3 kg
Answer(s): (a) 6 kg; (b) 3 kg