The bar graph shows the number of packets of different food collected in a donation drive.
- 14 of the total number of packets of food collected was cereals. How many packets of flour were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
2 kg |
Coffee |
390 g |
Cereals |
355 g |
Lentils |
300 g |
What is the difference between the total mass of coffee collected and the total mass of lentils collected? Give your answer in kg.
(a)
Number of packets of cereals collected= 1 u
1 u = 22
Total number of packets of food items collected
= 4 u
= 4 x 22
= 88
Number of packets of flour collected
= 88 - 10 - 22 - 40
= 16
(b)
Total mass of coffee collected
= 10 x 390
= 3900 g
Total mass of lentils collected
= 40 x 300
= 12000 g
Difference between the total mass of coffee and the total mass of lentils collected
= 12000 - 3900
= 8100 g
1000 g = 1 kg
8100 g = 8100 ÷ 1000 = 8.1 kg
Answer(s): (a) 16; (b) 8.1 kg