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 oats. How many packets of rice were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
10 kg |
Coffee |
345 g |
Oats |
280 g |
Milo |
400 g |
What is the difference between the total mass of coffee collected and the total mass of milo collected? Give your answer in kg.
(a)
Number of packets of oats collected= 1 u
1 u = 12
Total number of packets of food items collected
= 4 u
= 4 x 12
= 48
Number of packets of rice collected
= 48 - 10 - 12 - 14
= 12
(b)
Total mass of coffee collected
= 10 x 345
= 3450 g
Total mass of milo collected
= 14 x 400
= 5600 g
Difference between the total mass of coffee and the total mass of milo collected
= 5600 - 3450
= 2150 g
1000 g = 1 kg
2150 g = 2150 ÷ 1000 = 2.15 kg
Answer(s): (a) 12; (b) 2.15 kg