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 noodles. How many packets of rice were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
7 kg |
Tea |
275 g |
Noodles |
420 g |
Cereals |
300 g |
What is the difference between the total mass of tea collected and the total mass of cereals collected? Give your answer in kg.
(a)
Number of packets of noodles collected= 1 u
1 u = 22
Total number of packets of food items collected
= 3 u
= 3 x 22
= 66
Number of packets of rice collected
= 66 - 10 - 22 - 22
= 12
(b)
Total mass of tea collected
= 10 x 275
= 2750 g
Total mass of cereals collected
= 22 x 300
= 6600 g
Difference between the total mass of tea and the total mass of cereals collected
= 6600 - 2750
= 3850 g
1000 g = 1 kg
3850 g = 3850 ÷ 1000 = 3.85 kg
Answer(s): (a) 12; (b) 3.85 kg