The bar graph shows the number of packets of different food collected in a donation drive.
- 15 of the total number of packets of food collected was tea. How many packets of noodles were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
2 kg |
Tea |
345 g |
Pasta |
455 g |
Noodles |
400 g |
What is the difference between the total mass of pasta collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of tea collected = 1 u
1 u = 24
Total number of packets of food items collected
= 5 u
= 5 x 24
= 120
Number of packets of noodles collected
= 120 - 36 - 24 - 36
= 24
(b)
1 kg = 1000 g
2 kg = 2 x 1000 = 2000
Total mass of flour collected
= 36 x 2000
= 72000 g
Total mass of pasta collected
= 36 x 455
= 16380 g
Difference between the total mass of pasta and the total mass of flour collected
= 72000 - 16380
= 55620 g
1000 g = 1 kg
55620 g = 55620 ÷ 1000 = 55.62 kg
Answer(s): (a) 24; (b) 55.62 kg