The bar graph shows the number of packets of different food collected in a donation drive.
- 16 of the total number of packets of food collected was rice. How many packets of coffee were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
4 kg |
Cereals |
355 g |
Coffee |
455 g |
Pasta |
300 g |
What is the difference between the total mass of pasta collected and the total mass of cereals collected? Give your answer in kg.
(a)
Number of packets of rice collected = 1 u
1 u = 18
Total number of packets of food items collected
= 6 u
= 6 x 18
= 108
Number of packets of coffee collected
= 108 - 18 - 38 - 32
= 20
(b)
Total mass of pasta collected
= 32 x 300
= 9600 g
Total mass of cereals collected
= 38 x 355
= 13490 g
Difference in mass between the total mass of pasta and the total mass of cereals collected
= 13490 - 9600
= 3890 g
1000 g = 1 kg
3890 g = 3890 ÷ 1000 = 3.89 kg
Answer(s): (a) 20; (b) 3.89 kg