The bar graph shows the number of packets of different food collected in a donation drive.
- 13 of the total number of packets of food collected was tea. How many packets of coffee were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
2 kg |
| Tea |
260 g |
| Milo |
330 g |
| Coffee |
500 g |
What is the difference between the total mass of milo collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of tea collected = 1 u
1 u = 24
Total number of packets of food items collected
= 3 u
= 3 x 24
= 72
Number of packets of coffee collected
= 72 - 12 - 24 - 24
= 12
(b)
1 kg = 1000 g
2 kg = 2 x 1000 = 2000
Total mass of rice collected
= 12 x 2000
= 24000 g
Total mass of milo collected
= 24 x 330
= 7920 g
Difference between the total mass of milo and the total mass of rice collected
= 24000 - 7920
= 16080 g
1000 g = 1 kg
16080 g = 16080 ÷ 1000 = 16.08 kg
Answer(s): (a) 12; (b) 16.08 kg
