Principles of Economics

DEREE COLLEGE

DEPARTMENT OF ECONOMICS

EC 1101 PRINCIPLES OF ECONOMICS II FALL SEMESTER 2002

M-W-F 13:00-13:50

Dr. Andreas Kontoleon Office hours:

Contact: a.kontoleon@ucl.ac.uk Wednesdays 15:00-17:00

Homework for Chapter 8

(Answer Sheet)

1. Suppose an economy’s real GDP is $30,000 in year 1 and $31,200 in year 2. What is the growth rate of its real GDP? Assume that population was 100 in year 1 and 102 in year 2. What is the growth rate of GDP per capita?

Growth rate of real GDP = 4 percent (= $31,200 - $30,000)/$30,000). GDP per capita in year 1 = $300 (= $30,000/100). GDP per capita in year 2 = $305.88 (= $31,200/102). Growth rate of GDP per capita is 1.96 percent = ($305.88 - $300)/300).

2. Use the following data to calculate (a) the size of the labor force and (b) the official unemployment rate: total population, 500; population under 16 years of age or institutionalized, 120; not in labor force, 150; unemployed, 23; part-time workers looking for full-time jobs, 10.

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Remember: part workers are not considered as unemployed and hence they do enter the calculation of the official unemployment rate.

3. Assume that in a particular year the natural rate of unemployment is 5 percent and the actual rate of unemployment is 9 percent. Use Okun’s law to determine the size of the GDP gap in percentage-point terms. If the nominal GDP is $500 billion in that year, how much output is being foregone because of cyclical unemployment?

First find the amount of cyclical unemployment: 9-5=4 and then apply Okun’s Law:

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Then [pic][pic]

4. If the price index was 110 last year and is 121 this year, what is this year’s rate of inflation? What is the “rule of 70”? How long would it take for the price level to double if inflation persisted at (a) 2, (b) 5, and (c) 10 percent per year?

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Dividing 70 by the annual percentage rate...