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 |
Flour |
2 kg |
Lentils |
490 g |
Noodles |
335 g |
Dried Nuts |
400 g |
What is the difference between the total mass of noodles collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of lentils collected = 1 u
1 u = 30
Total number of packets of food items collected
= 3 u
= 3 x 30
= 90
Number of packets of dried nuts collected
= 90 - 12 - 30 - 32
= 16
(b)
1 kg = 1000 g
2 kg = 2 x 1000 = 2000
Total mass of flour collected
= 12 x 2000
= 24000 g
Total mass of noodles collected
= 32 x 335
= 10720 g
Difference between the total mass of noodles and the total mass of flour collected
= 24000 - 10720
= 13280 g
1000 g = 1 kg
13280 g = 13280 ÷ 1000 = 13.28 kg
Answer(s): (a) 16; (b) 13.28 kg