Answer:
Horses - 0.75 - normal
Clubs- 0.875 - inferior
Diamonds - 1.75 - normal
Diamond is a luxury good
Step-by-step explanation:
Income elasticity of demand measures the responsiveness of quantity demanded to changes in income of the consumer.
Income elasticity of demand = percentage change in demand / percentage change in income
Income elascitiy for horses = 12% / 16% =
Income elasticity of demand for spades = 14% / 16% = 0.875
Income elasticity of demand for diamonds 28% / 16% = 1.75
A normal good is a whose demand increases when income increases and falls when income falls.
An inferior good is a good whose demand increases when income falls and whose demand falls when income increases.
Horses and diamonds are normal goods because the demand for the goods increases with income while clubs are inferior goods because the demand for the goods falls when income rises.
A luxury good is a good whose demand rises more than the rise in income. The demands for diamonds increase more than the increase in income, so diamonds are luxury goods.
I hope my answer helps you