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 flour were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
8 kg |
Oats |
295 g |
Coffee |
280 g |
Cereals |
300 g |
What is the difference between the total mass of oats collected and the total mass of cereals 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 flour collected
= 110 - 22 - 22 - 38
= 28
(b)
Total mass of oats collected
= 22 x 295
= 6490 g
Total mass of cereals collected
= 38 x 300
= 11400 g
Difference between the total mass of oats and the total mass of cereals collected
= 11400 - 6490
= 4910 g
1000 g = 1 kg
4910 g = 4910 ÷ 1000 = 4.91 kg
Answer(s): (a) 28; (b) 4.91 kg