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If it cost $8 to fill a gas tank in 1980, how much would it have cost to fill the same tank in 1990? Average Gasoline Prices (per gallon) Price as a Percentage Price Index (1980 = 100) 25. 4 Year Price of 1980 Price 1960 $0.31 25.4% 1970 $0.36 $1.22 29.5% 29 5 1980 100.0% 100.0 100 8 127.9 1990 $1.23 100.8% 127.9% 232.8% 2000 $1.56 $2.84 2010 232.8 It would have cost $ in 1990 (Round to the nearest cent as needed.)

If it cost $8 to fill a gas tank in 1980, how much would it have cost to fill the same tank in 1990? Average Gasoline Prices (per gallon) Price as a Percentage Price Index (1980 = 100) 25. 4 Year Price of 1980 Price 1960 $0.31 25.4% 1970 $0.36 $1.22 29.5% 29 5 1980 100.0% 100.0 100 8 127.9 1990 $1.23 100.8% 127.9% 232.8% 2000 $1.56 $2.84 2010 232.8 It would have cost $ in 1990 (Round to the nearest cent as needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter7: Percents
Section7.2: Percents And Proportions
Problem 18E
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If it cost $8 to fill a gas tank in 1980, how much would it have cost to fill the same tank in 1990? Average Gasoline Prices (per gallon) Price as a Percentage Price Index (1980 = 100) 25.4 Year Price of 1980 Price 1960 $0.31 25.4% 1970 $0.36 $1.22 $1.23 $1.56 $2.84 29.5% 29.5 1980 1990 100.0% 100.0 100.8% 100 8 127.9 2000 2010 127.9% 232.8% 232.8 It would have cost $ in 1990. (Round to the nearest cent as needed.)
Transcribed Image Text:If it cost $8 to fill a gas tank in 1980, how much would it have cost to fill the same tank in 1990? Average Gasoline Prices (per gallon) Price as a Percentage Price Index (1980 = 100) 25.4 Year Price of 1980 Price 1960 $0.31 25.4% 1970 $0.36 $1.22 $1.23 $1.56 $2.84 29.5% 29.5 1980 1990 100.0% 100.0 100.8% 100 8 127.9 2000 2010 127.9% 232.8% 232.8 It would have cost $ in 1990. (Round to the nearest cent as needed.)
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