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 rice. How many packets of tea were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
9 kg |
| Coffee |
455 g |
| Tea |
465 g |
| Lentils |
300 g |
What is the difference between the total mass of lentils collected and the total mass of coffee collected? Give your answer in kg.
(a)
Number of packets of rice collected = 1 u
1 u = 32
Total number of packets of food items collected
= 3 u
= 3 x 32
= 96
Number of packets of tea collected
= 96 - 32 - 24 - 18
= 22
(b)
Total mass of lentils collected
= 18 x 300
= 5400 g
Total mass of coffee collected
= 24 x 455
= 10920 g
Difference in mass between the total mass of lentils and the total mass of coffee collected
= 10920 - 5400
= 5520 g
1000 g = 1 kg
5520 g = 5520 ÷ 1000 = 5.52 kg
Answer(s): (a) 22; (b) 5.52 kg
