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 biscuits were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Rice |
7 kg |
Lentils |
255 g |
Tea |
450 g |
Biscuits |
300 g |
What is the difference between the total mass of tea collected and the total mass of rice collected? Give your answer in kg.
(a)
Number of packets of lentils collected = 1 u
1 u = 22
Total number of packets of food items collected
= 5 u
= 5 x 22
= 110
Number of packets of biscuits collected
= 110 - 34 - 22 - 36
= 18
(b)
1 kg = 1000 g
7 kg = 7 x 1000 = 7000
Total mass of rice collected
= 34 x 7000
= 238000 g
Total mass of tea collected
= 36 x 450
= 16200 g
Difference between the total mass of tea and the total mass of rice collected
= 238000 - 16200
= 221800 g
1000 g = 1 kg
221800 g = 221800 ÷ 1000 = 221.8 kg
Answer(s): (a) 18; (b) 221.8 kg