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 coffee. How many packets of cereals were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
10 kg |
Coffee |
330 g |
Noodles |
350 g |
Cereals |
400 g |
What is the difference between the total mass of noodles collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of coffee collected = 1 u
1 u = 22
Total number of packets of food items collected
= 5 u
= 5 x 22
= 110
Number of packets of cereals collected
= 110 - 26 - 22 - 32
= 30
(b)
1 kg = 1000 g
10 kg = 10 x 1000 = 10000
Total mass of flour collected
= 26 x 10000
= 260000 g
Total mass of noodles collected
= 32 x 350
= 11200 g
Difference between the total mass of noodles and the total mass of flour collected
= 260000 - 11200
= 248800 g
1000 g = 1 kg
248800 g = 248800 ÷ 1000 = 248.8 kg
Answer(s): (a) 30; (b) 248.8 kg