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 cereals. How many packets of tea were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
1 kg |
Cereals |
465 g |
Biscuits |
370 g |
Tea |
300 g |
What is the difference between the total mass of biscuits collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of cereals collected = 1 u
1 u = 36
Total number of packets of food items collected
= 3 u
= 3 x 36
= 108
Number of packets of tea collected
= 108 - 22 - 36 - 32
= 18
(b)
1 kg = 1000 g
1 kg = 1 x 1000 = 1000
Total mass of rice collected
= 22 x 1000
= 22000 g
Total mass of biscuits collected
= 32 x 370
= 11840 g
Difference between the total mass of biscuits and the total mass of rice collected
= 22000 - 11840
= 10160 g
1000 g = 1 kg
10160 g = 10160 ÷ 1000 = 10.16 kg
Answer(s): (a) 18; (b) 10.16 kg