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 rice. How many packets of pasta were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
5 kg |
Coffee |
340 g |
Pasta |
345 g |
Biscuits |
200 g |
What is the difference between the total mass of biscuits collected and the total mass of coffee collected? Give your answer in kg.
(a)
Number of packets of rice collected = 1 u
1 u = 28
Total number of packets of food items collected
= 3 u
= 3 x 28
= 84
Number of packets of pasta collected
= 84 - 28 - 20 - 20
= 16
(b)
Total mass of biscuits collected
= 20 x 200
= 4000 g
Total mass of coffee collected
= 20 x 340
= 6800 g
Difference in mass between the total mass of biscuits and the total mass of coffee collected
= 6800 - 4000
= 2800 g
1000 g = 1 kg
2800 g = 2800 ÷ 1000 = 2.8 kg
Answer(s): (a) 16; (b) 2.8 kg