In: Economics
The following data pertain to products A and B, both of which
are purchased by Susan. A is on vertical axis and B is on
horizontal axis. Initially, the prices of the products and
quantities consumed are:
PA= $8, QA= 5, PB= $6, QB= 10.
Susan has $100 to spend per time period. After an increase in price
of B, the prices and quantities consumed are:
PA= $8, QA= 4, PB = $9, QB= 7.5.
Assume that Susan maximizes utility under both price conditions
above. Also, note that if after the price increase enough income
were given back to Susan to put her back on the original
indifference curve, she would consume this combination of A and
B:
QA= 10,QB= 4
a. Determine the change in consumption rate of good B due to (1)
the substitution effect and (2) the income effect.
b. Determine if product B is a normal, inferior, or Giffengood.
Explain.


Do note that TE<0; SE<0
and IE>0 are the three necessary and sufficient conditions for
proving a good to be inferior according to general economic theory
relating to microeconomics.