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 oats. How many packets of noodles were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
9 kg |
| Oats |
490 g |
| Milo |
330 g |
| Noodles |
400 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 oats collected = 1 u
1 u = 22
Total number of packets of food items collected
= 4 u
= 4 x 22
= 88
Number of packets of noodles collected
= 88 - 12 - 22 - 32
= 22
(b)
1 kg = 1000 g
9 kg = 9 x 1000 = 9000
Total mass of rice collected
= 12 x 9000
= 108000 g
Total mass of milo collected
= 32 x 330
= 10560 g
Difference between the total mass of milo and the total mass of rice collected
= 108000 - 10560
= 97440 g
1000 g = 1 kg
97440 g = 97440 ÷ 1000 = 97.44 kg
Answer(s): (a) 22; (b) 97.44 kg
