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 lentils. How many packets of noodles were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Flour |
4 kg |
| Lentils |
455 g |
| Pasta |
385 g |
| Noodles |
200 g |
What is the difference between the total mass of pasta collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of lentils collected = 1 u
1 u = 24
Total number of packets of food items collected
= 4 u
= 4 x 24
= 96
Number of packets of noodles collected
= 96 - 12 - 24 - 36
= 24
(b)
1 kg = 1000 g
4 kg = 4 x 1000 = 4000
Total mass of flour collected
= 12 x 4000
= 48000 g
Total mass of pasta collected
= 36 x 385
= 13860 g
Difference between the total mass of pasta and the total mass of flour collected
= 48000 - 13860
= 34140 g
1000 g = 1 kg
34140 g = 34140 ÷ 1000 = 34.14 kg
Answer(s): (a) 24; (b) 34.14 kg
