Goods H, I, and J are related goods, each operating in a perfectly competitive market.

1. As the price of Good H increases from $4 to $5, its quantity demanded falls from 100 units to 60 units. Calculate the price elasticity of demand for this range.
2. The equilibrium price for Good J is $5, and the equilibrium quantity is 40 units. The cross-price elasticity of Good J with Good H is 2.
   1. Are Good J and Good H normal goods, inferior goods, complementary goods, or substitute goods?
   2. Calculate the new equilibrium quantity of Good J after a 50% price increase for Good H.