The bar graph shows the number of packets of different food collected in a donation drive.
- 15 of the total number of packets of food collected was lentils. How many packets of dried nuts were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
6 kg |
| Lentils |
440 g |
| Noodles |
265 g |
| Dried Nuts |
400 g |
What is the difference between the total mass of noodles collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of lentils collected = 1 u
1 u = 18
Total number of packets of food items collected
= 5 u
= 5 x 18
= 90
Number of packets of dried nuts collected
= 90 - 14 - 18 - 36
= 22
(b)
1 kg = 1000 g
6 kg = 6 x 1000 = 6000
Total mass of rice collected
= 14 x 6000
= 84000 g
Total mass of noodles collected
= 36 x 265
= 9540 g
Difference between the total mass of noodles and the total mass of rice collected
= 84000 - 9540
= 74460 g
1000 g = 1 kg
74460 g = 74460 ÷ 1000 = 74.46 kg
Answer(s): (a) 22; (b) 74.46 kg
