The cross elasticity of demand between bus travel and rail travel has a value of +2. If an increase in bus fares led to demand for rail travel rising by 10%, what change in bus fares would have brought this about?
- Afrom 20 cents to 21 cents
- Bfrom 30 cents to 33 cents
- Cfrom 40 cents to 45 cents
- Dfrom 50 cents to 60 cents