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 dried nuts. How many packets of coffee were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
9 kg |
Dried Nuts |
370 g |
Lentils |
310 g |
Coffee |
400 g |
What is the difference between the total mass of lentils collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of dried nuts collected = 1 u
1 u = 16
Total number of packets of food items collected
= 6 u
= 6 x 16
= 96
Number of packets of coffee collected
= 96 - 26 - 16 - 36
= 18
(b)
1 kg = 1000 g
9 kg = 9 x 1000 = 9000
Total mass of rice collected
= 26 x 9000
= 234000 g
Total mass of lentils collected
= 36 x 310
= 11160 g
Difference between the total mass of lentils and the total mass of rice collected
= 234000 - 11160
= 222840 g
1000 g = 1 kg
222840 g = 222840 ÷ 1000 = 222.84 kg
Answer(s): (a) 18; (b) 222.84 kg