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 flour. How many packets of noodles were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Flour |
10 kg |
| Cereals |
420 g |
| Noodles |
380 g |
| Tea |
500 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 flour collected = 1 u
1 u = 34
Total number of packets of food items collected
= 3 u
= 3 x 34
= 102
Number of packets of noodles collected
= 102 - 34 - 32 - 24
= 12
(b)
Total mass of tea collected
= 24 x 500
= 12000 g
Total mass of cereals collected
= 32 x 420
= 13440 g
Difference in mass between the total mass of tea and the total mass of cereals collected
= 13440 - 12000
= 1440 g
1000 g = 1 kg
1440 g = 1440 ÷ 1000 = 1.44 kg
Answer(s): (a) 12; (b) 1.44 kg
