The bar graph shows the number of packets of different food collected in a donation drive.
- 16 of the total number of packets of food collected was noodles. How many packets of oats were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Flour |
9 kg |
| Noodles |
295 g |
| Lentils |
335 g |
| Oats |
300 g |
What is the difference between the total mass of lentils collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of noodles collected = 1 u
1 u = 12
Total number of packets of food items collected
= 6 u
= 6 x 12
= 72
Number of packets of oats collected
= 72 - 16 - 12 - 32
= 12
(b)
1 kg = 1000 g
9 kg = 9 x 1000 = 9000
Total mass of flour collected
= 16 x 9000
= 144000 g
Total mass of lentils collected
= 32 x 335
= 10720 g
Difference between the total mass of lentils and the total mass of flour collected
= 144000 - 10720
= 133280 g
1000 g = 1 kg
133280 g = 133280 ÷ 1000 = 133.28 kg
Answer(s): (a) 12; (b) 133.28 kg
