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 oats. How many packets of biscuits were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
5 kg |
Oats |
340 g |
Coffee |
270 g |
Biscuits |
500 g |
What is the difference between the total mass of coffee collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of oats collected = 1 u
1 u = 24
Total number of packets of food items collected
= 4 u
= 4 x 24
= 96
Number of packets of biscuits collected
= 96 - 22 - 24 - 38
= 12
(b)
1 kg = 1000 g
5 kg = 5 x 1000 = 5000
Total mass of rice collected
= 22 x 5000
= 110000 g
Total mass of coffee collected
= 38 x 270
= 10260 g
Difference between the total mass of coffee and the total mass of rice collected
= 110000 - 10260
= 99740 g
1000 g = 1 kg
99740 g = 99740 ÷ 1000 = 99.74 kg
Answer(s): (a) 12; (b) 99.74 kg