The following table shows CFC emissions (in million metric tons) from various sectors for an industry for a period of 5 years. Based on the table answer the question given below.

What is the approximate contribution in percentage in CFC emissions from the cement sector, in comparison to that of the total CFC emissions from all the sectors in 2017?

CFC emissions from the Cement sector = 320

CFC emissions from the Fertiliser sector = 650

CFC emissions from the Foam sector = 100

CFC emissions from the Pesticides sector = 120

To calculate the contribution of the Cement sector as a percentage of the total emissions from all sectors, we use:

​$$\text{Contribution Percentage (Cement)} = \frac{\text{Cement Sector Emissions}}{\text{Total Emissions from All Sectors}} \times 100$$​​

Total Emissions from All Sectors in 2017 = 320 + 650 + 100 + 120 = 1190

​$$\text{Contribution Percentage (Cement)} = \frac{320}{1190} \times 100 = 26.89 \% \approx 27\%$$​​

Thus, The approximate contribution in CFC emissions from the cement sector in 2017 is 27%.