Study the pie charts above and answer the questions that follow - NSC Mathematical Literacy - Question 5 - 2019 - Paper 1

The percentage allocated for yard trimmings can be calculated as follows:

1. Total pie chart value = 100%.
2. Yard trimmings = 3.4%.
3. Thus, the percentage for yard trimmings is 3.4%.

The percentage allocated for textiles is determined by:

1. Textiles = 1.6% from the pie chart data.
2. Thus, the percentage for textiles is 1.6%.

To calculate the total amount of plastic recycled in 2015:

1. Total recycled material = 91.16 million tons.
2. Plastic = 3.4% of 91.16 million tons.
3. Calculation: ext{Plastic Recycled} = rac{3.4}{100} imes 91.16 = 3.09944 ext{ million tons}
4. Thus, the total amount of plastic recycled in 2015 is approximately 3.1 million tons.

An example of a product that could be recycled under the metals category is scrap metal from construction or automotive industries.

Another type of graph that could be used to represent the data above is a bar graph.

To calculate the probability:

1. The percentage for the 'other' category is 11.2%.
2. The probability of randomly selecting a material in the 'other' category is: P = rac{11.2}{100} = 0.112
3. Thus, the probability, as a decimal, is 0.112.