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 oats. How many packets of rice were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
3 kg |
Biscuits |
380 g |
Oats |
300 g |
Noodles |
500 g |
What is the difference between the total mass of biscuits collected and the total mass of noodles collected? Give your answer in kg.
(a)
Number of packets of oats collected= 1 u
1 u = 26
Total number of packets of food items collected
= 3 u
= 3 x 26
= 78
Number of packets of rice collected
= 78 - 12 - 26 - 14
= 26
(b)
Total mass of biscuits collected
= 12 x 380
= 4560 g
Total mass of noodles collected
= 14 x 500
= 7000 g
Difference between the total mass of biscuits and the total mass of noodles collected
= 7000 - 4560
= 2440 g
1000 g = 1 kg
2440 g = 2440 ÷ 1000 = 2.44 kg
Answer(s): (a) 26; (b) 2.44 kg