The bar graph shows the number of packets of different food collected in a donation drive.
- 16 of the total number of packets of food collected was biscuits. How many packets of oats were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
4 kg |
Biscuits |
315 g |
Coffee |
360 g |
Oats |
500 g |
What is the difference between the total mass of coffee collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of biscuits collected = 1 u
1 u = 18
Total number of packets of food items collected
= 6 u
= 6 x 18
= 108
Number of packets of oats collected
= 108 - 30 - 18 - 34
= 26
(b)
1 kg = 1000 g
4 kg = 4 x 1000 = 4000
Total mass of flour collected
= 30 x 4000
= 120000 g
Total mass of coffee collected
= 34 x 360
= 12240 g
Difference between the total mass of coffee and the total mass of flour collected
= 120000 - 12240
= 107760 g
1000 g = 1 kg
107760 g = 107760 ÷ 1000 = 107.76 kg
Answer(s): (a) 26; (b) 107.76 kg