57 In 1970, Professor Plum earned $12,000; in 1980, he earned $24,000; and in 1990, he earned $36,000. If the CPI was 40 in 1970, 60 in 1980, and 100 in 1990, then in real terms, Professor Plum's salary was highest in 1980 and lowest in 1970. а. 1980 and lowest in 1990 b. 1990 and lowest in 1970 с. d. 1990 and lowest in 1980.

Essentials of Economics (MindTap Course List)
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Chapter16: Measuring The Cost Of Living
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57
In 1970, Professor Plum earned $12,000; in 1980, he earned $24,000; and in 1990, he earned
$36,000. If the CPI was 40 in 1970, 60 in 1980, and 100 in 1990, then in real terms, Professor Plum's salary
was highest in
1980 and lowest in 1970.
а.
1980 and lowest in 1990
b.
1990 and lowest in 1970
с.
d.
1990 and lowest in 1980.
Transcribed Image Text:57 In 1970, Professor Plum earned $12,000; in 1980, he earned $24,000; and in 1990, he earned $36,000. If the CPI was 40 in 1970, 60 in 1980, and 100 in 1990, then in real terms, Professor Plum's salary was highest in 1980 and lowest in 1970. а. 1980 and lowest in 1990 b. 1990 and lowest in 1970 с. d. 1990 and lowest in 1980.
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