If a 5 percent increase in income leads to a 15 percent increase in the quantity
demanded of a service, then the income elasticity of demand for that service equals
0.33.
A pizza shop owner needs to buy a new pizza oven and he is trying to decide between
two different used ones. Whichever oven he buys, it will generate $3,000 net revenue
per year. The older use oven has a useful life of only 2 years and the newer oven has a
useful life of 4 years. If the interest rate is 8% per year, what is the difference in value
between the two ovens? (Assume that each year’s revenue is received at the end of the
year.)
Because the market demand curve slopes downward