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 lentils. How many packets of oats were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
1 kg |
| Lentils |
400 g |
| Biscuits |
460 g |
| Oats |
400 g |
What is the difference between the total mass of biscuits collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of lentils collected = 1 u
1 u = 22
Total number of packets of food items collected
= 4 u
= 4 x 22
= 88
Number of packets of oats collected
= 88 - 32 - 22 - 12
= 22
(b)
1 kg = 1000 g
1 kg = 1 x 1000 = 1000
Total mass of rice collected
= 32 x 1000
= 32000 g
Total mass of biscuits collected
= 12 x 460
= 5520 g
Difference between the total mass of biscuits and the total mass of rice collected
= 32000 - 5520
= 26480 g
1000 g = 1 kg
26480 g = 26480 ÷ 1000 = 26.48 kg
Answer(s): (a) 22; (b) 26.48 kg
