1. The world consumption rate of CFRP is rising at 10% per
year. How long does it take to double?
2. Derive the dynamic index
starting with equation (2.3) of the text
3. A total of 16 million cars were sold in China in 2010; in
2008 the sale was 6.6 million. What is the annual growth rate of car sales,
expressed as % per year? If there were 16 million cars already on Chinese roads
by the end of 2010 and this growth rate continues, how many cars will there be
in 2020, assuming that the number that are removed from the roads in this time
interval can be neglected?