The demand for petrol rises from 500 to 600 barrels when the price of a particular scooter is reduced from Rs. 25000 to Rs. 22000. Find out the cross elasticity of demand for the two. What is the nature of their relationship?
Сross elasticity of demand:
E = (500+600)/(25000+22000)×(600-500)/(22000-25000) = -11/14100
The petrol and the scooter are complementary goods, so cross elasticity of demand is negative
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