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 flour. How many packets of cereals were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Flour |
2 kg |
| Dried Nuts |
400 g |
| Cereals |
290 g |
| Coffee |
400 g |
What is the difference between the total mass of coffee collected and the total mass of dried nuts collected? Give your answer in kg.
(a)
Number of packets of flour collected = 1 u
1 u = 28
Total number of packets of food items collected
= 4 u
= 4 x 28
= 112
Number of packets of cereals collected
= 112 - 28 - 32 - 30
= 22
(b)
Total mass of coffee collected
= 30 x 400
= 12000 g
Total mass of dried nuts collected
= 32 x 400
= 12800 g
Difference in mass between the total mass of coffee and the total mass of dried nuts collected
= 12800 - 12000
= 800 g
1000 g = 1 kg
800 g = 800 ÷ 1000 = 0.8 kg
Answer(s): (a) 22; (b) 0.8 kg
