a)
To find:
Individual’s full income, number of working hours if 75% income is devoted to leisure.
a)

Explanation of Solution
Total number of working hours = 8000
Wage per hour = $5
Total income annually :
Amount sacrificed for leisure = $5
Amount to be spent on leisure :
Number of hours for leisure:
Number of working hours= Total hours − Leisure Time
Total working hours is 2000.
Introduction: Envelop theorem states that changes in exogeneous variables must be considered for profit maximizing equations, ignoring the change in endogeneous variable.
b)
To know:
Number of working hours if 75% income is devoted to leisure when rich uncle dies
b)

Explanation of Solution
An annual income, which is left by a rich uncle = $4000
Labor income:
Total number of working hours = 8000
Wage per hour = $5
Labor income annually :
Total income :
Amount spent on leisure:
Therefore, number of leisure hours :
So, Work = Total time − Leisure time
Introduction: Envelop theorem states that changes in exogeneous variables must be considered for profit maximizing equations, ignoring the change in endogeneous variable.
c)
To ascertain:
Number of working hours if 75% income is devoted to leisure when hourly wage is $10.
c)

Explanation of Solution
New wage rate = $10
Non labor income = $4000
Total annual earned income:
Total income:
Amount spent on leisure:
Therefore, time spent on leisure:
So, work = Total time − Leisure time
Introduction: Envelop theorem states that changes in exogeneous variables must be considered for profit maximizing equations, ignoring the change in endogeneous variable.
d)
To Plot:
Graphical representation of supply labor curve..
d)

Explanation of Solution
The supply curve is shown below in the graph:
When the wage rate is $5 per hour, number of working hours is S1500
When the wage rate is $10 per hour, number of working hours is 1650.
Introduction: Envelop theorem states that changes in exogeneous variables must be considered for profit maximizing equations, ignoring the change in endogeneous variable.
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