The bar graph shows the number of packets of different food collected in a donation drive.
- 13 of the total number of packets of food collected was lentils. How many packets of dried nuts were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
3 kg |
Lentils |
430 g |
Noodles |
460 g |
Dried Nuts |
400 g |
What is the difference between the total mass of noodles collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of lentils collected = 1 u
1 u = 34
Total number of packets of food items collected
= 3 u
= 3 x 34
= 102
Number of packets of dried nuts collected
= 102 - 24 - 34 - 30
= 14
(b)
1 kg = 1000 g
3 kg = 3 x 1000 = 3000
Total mass of rice collected
= 24 x 3000
= 72000 g
Total mass of noodles collected
= 30 x 460
= 13800 g
Difference between the total mass of noodles and the total mass of rice collected
= 72000 - 13800
= 58200 g
1000 g = 1 kg
58200 g = 58200 ÷ 1000 = 58.2 kg
Answer(s): (a) 14; (b) 58.2 kg