The bar graph shows the number of packets of different food collected in a donation drive.
- 15 of the total number of packets of food collected was rice. How many packets of dried nuts were collected?
- The table shows the mass of each packet of food.
| Food Items |
Mass of each packet |
| Rice |
7 kg |
| Biscuits |
275 g |
| Dried Nuts |
495 g |
| Lentils |
200 g |
What is the difference between the total mass of lentils collected and the total mass of biscuits collected? Give your answer in kg.
(a)
Number of packets of rice collected = 1 u
1 u = 16
Total number of packets of food items collected
= 5 u
= 5 x 16
= 80
Number of packets of dried nuts collected
= 80 - 16 - 36 - 12
= 16
(b)
Total mass of lentils collected
= 12 x 200
= 2400 g
Total mass of biscuits collected
= 36 x 275
= 9900 g
Difference in mass between the total mass of lentils and the total mass of biscuits collected
= 9900 - 2400
= 7500 g
1000 g = 1 kg
7500 g = 7500 ÷ 1000 = 7.5 kg
Answer(s): (a) 16; (b) 7.5 kg
