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 pasta. How many packets of oats were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
9 kg |
| Pasta |
355 g |
| Tea |
485 g |
| Oats |
300 g |
What is the difference between the total mass of tea collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of pasta collected = 1 u
1 u = 36
Total number of packets of food items collected
= 3 u
= 3 x 36
= 108
Number of packets of oats collected
= 108 - 18 - 36 - 36
= 18
(b)
1 kg = 1000 g
9 kg = 9 x 1000 = 9000
Total mass of rice collected
= 18 x 9000
= 162000 g
Total mass of tea collected
= 36 x 485
= 17460 g
Difference between the total mass of tea and the total mass of rice collected
= 162000 - 17460
= 144540 g
1000 g = 1 kg
144540 g = 144540 ÷ 1000 = 144.54 kg
Answer(s): (a) 18; (b) 144.54 kg
