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 biscuits. How many packets of milo were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
2 kg |
| Biscuits |
350 g |
| Pasta |
295 g |
| Milo |
500 g |
What is the difference between the total mass of pasta collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of biscuits collected = 1 u
1 u = 32
Total number of packets of food items collected
= 3 u
= 3 x 32
= 96
Number of packets of milo collected
= 96 - 18 - 32 - 24
= 22
(b)
1 kg = 1000 g
2 kg = 2 x 1000 = 2000
Total mass of rice collected
= 18 x 2000
= 36000 g
Total mass of pasta collected
= 24 x 295
= 7080 g
Difference between the total mass of pasta and the total mass of rice collected
= 36000 - 7080
= 28920 g
1000 g = 1 kg
28920 g = 28920 ÷ 1000 = 28.92 kg
Answer(s): (a) 22; (b) 28.92 kg
