Indian Institute of Foreign Trade 2010 Solved Paper

CO2 emission by the US after 2 years =(1−‌‌

12.5

100

)2×1200=918.75 million tons.
The per capita income in US after 2 years =(1+‌‌

2

100

)2×300=312.12
Similarly, we can calculate the CO2 emission and per capita income for remaining countries after two years from now.
CO2 emission by the China after 2 years = 903.44 million tons.
The per capita income in China after 2 years =(1+‌‌

4

100

)2×270=292.032
CO2 emission by the Japan after 2 years =861.33 million tons.
The per capital income in Japan after 2 years =(1+‌‌

3

100

)2×240=254.616
Hence, the required ratioTherefore, we can say option C is the correct answer.