The bar graph shows the number of packets of different food collected in a donation drive.
- 13 of the total number of packets of food collected was flour. How many packets of coffee were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
4 kg |
Oats |
480 g |
Coffee |
340 g |
Tea |
400 g |
What is the difference between the total mass of tea collected and the total mass of oats collected? Give your answer in kg.
(a)
Number of packets of flour collected = 1 u
1 u = 40
Total number of packets of food items collected
= 3 u
= 3 x 40
= 120
Number of packets of coffee collected
= 120 - 40 - 28 - 24
= 28
(b)
Total mass of tea collected
= 24 x 400
= 9600 g
Total mass of oats collected
= 28 x 480
= 13440 g
Difference in mass between the total mass of tea and the total mass of oats collected
= 13440 - 9600
= 3840 g
1000 g = 1 kg
3840 g = 3840 ÷ 1000 = 3.84 kg
Answer(s): (a) 28; (b) 3.84 kg