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 |
Flour |
10 kg |
Cereals |
300 g |
Biscuits |
330 g |
Tea |
300 g |
What is the difference between the total mass of biscuits collected and the total mass of flour collected? Give your answer in kg.
(a)
Number of packets of cereals collected = 1 u
1 u = 38
Total number of packets of food items collected
= 3 u
= 3 x 38
= 114
Number of packets of tea collected
= 114 - 16 - 38 - 32
= 28
(b)
1 kg = 1000 g
10 kg = 10 x 1000 = 10000
Total mass of flour collected
= 16 x 10000
= 160000 g
Total mass of biscuits collected
= 32 x 330
= 10560 g
Difference between the total mass of biscuits and the total mass of flour collected
= 160000 - 10560
= 149440 g
1000 g = 1 kg
149440 g = 149440 ÷ 1000 = 149.44 kg
Answer(s): (a) 28; (b) 149.44 kg