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 lentils. How many packets of flour were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
5 kg |
Noodles |
340 g |
Lentils |
470 g |
Coffee |
300 g |
What is the difference between the total mass of noodles collected and the total mass of coffee collected? Give your answer in kg.
(a)
Number of packets of lentils collected= 1 u
1 u = 18
Total number of packets of food items collected
= 5 u
= 5 x 18
= 90
Number of packets of flour collected
= 90 - 22 - 18 - 34
= 16
(b)
Total mass of noodles collected
= 22 x 340
= 7480 g
Total mass of coffee collected
= 34 x 300
= 10200 g
Difference between the total mass of noodles and the total mass of coffee collected
= 10200 - 7480
= 2720 g
1000 g = 1 kg
2720 g = 2720 ÷ 1000 = 2.72 kg
Answer(s): (a) 16; (b) 2.72 kg