Travellers can cross the English Channel either by the Channel Tunnel or by a sea journey.
The table gives details of the passengers, in thousands, using these services between 2005 and 2015.
Between 2005 and 2015 the price of the Channel Tunnel fell and the price of sea journeys rose.
What does the data suggest?
The cross elasticity of demand between the two services is positive.
2 )
The market for crossing the English Channel grew continuously over the period.
3 )
The rate of decline in sea journeys accelerated over the period.
4 )
The two services for crossing the English Channel are complementary.
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