The bar graph shows the number of packets of different food collected in a donation drive.
- 14 of the total number of packets of food collected was cereals. How many packets of flour were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
7 kg |
Biscuits |
380 g |
Cereals |
460 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 cereals collected= 1 u
1 u = 28
Total number of packets of food items collected
= 4 u
= 4 x 28
= 112
Number of packets of flour collected
= 112 - 22 - 28 - 38
= 24
(b)
Total mass of biscuits collected
= 22 x 380
= 8360 g
Total mass of noodles collected
= 38 x 500
= 19000 g
Difference between the total mass of biscuits and the total mass of noodles collected
= 19000 - 8360
= 10640 g
1000 g = 1 kg
10640 g = 10640 ÷ 1000 = 10.64 kg
Answer(s): (a) 24; (b) 10.64 kg