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 rice. How many packets of noodles were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
5 kg |
Oats |
430 g |
Noodles |
340 g |
Lentils |
200 g |
What is the difference between the total mass of lentils collected and the total mass of oats collected? Give your answer in kg.
(a)
Number of packets of rice collected = 1 u
1 u = 26
Total number of packets of food items collected
= 3 u
= 3 x 26
= 78
Number of packets of noodles collected
= 78 - 26 - 12 - 20
= 20
(b)
Total mass of lentils collected
= 20 x 200
= 4000 g
Total mass of oats collected
= 12 x 430
= 5160 g
Difference in mass between the total mass of lentils and the total mass of oats collected
= 5160 - 4000
= 1160 g
1000 g = 1 kg
1160 g = 1160 ÷ 1000 = 1.16 kg
Answer(s): (a) 20; (b) 1.16 kg