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 biscuits. How many packets of flour were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
1 kg |
Lentils |
280 g |
Biscuits |
415 g |
Oats |
300 g |
What is the difference between the total mass of lentils collected and the total mass of oats collected? Give your answer in kg.
(a)
Number of packets of biscuits collected= 1 u
1 u = 30
Total number of packets of food items collected
= 4 u
= 4 x 30
= 120
Number of packets of flour collected
= 120 - 30 - 30 - 36
= 24
(b)
Total mass of lentils collected
= 30 x 280
= 8400 g
Total mass of oats collected
= 36 x 300
= 10800 g
Difference between the total mass of lentils and the total mass of oats collected
= 10800 - 8400
= 2400 g
1000 g = 1 kg
2400 g = 2400 ÷ 1000 = 2.4 kg
Answer(s): (a) 24; (b) 2.4 kg