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 cereals. How many packets of milo were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
1 kg |
Cereals |
300 g |
Noodles |
395 g |
Milo |
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 cereals collected = 1 u
1 u = 22
Total number of packets of food items collected
= 4 u
= 4 x 22
= 88
Number of packets of milo collected
= 88 - 28 - 22 - 14
= 24
(b)
1 kg = 1000 g
1 kg = 1 x 1000 = 1000
Total mass of rice collected
= 28 x 1000
= 28000 g
Total mass of noodles collected
= 14 x 395
= 5530 g
Difference between the total mass of noodles and the total mass of rice collected
= 28000 - 5530
= 22470 g
1000 g = 1 kg
22470 g = 22470 ÷ 1000 = 22.47 kg
Answer(s): (a) 24; (b) 22.47 kg