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In 1990, the price of a gallon of unleaded gasoline was $1.37. In 1998, it was $1.02 per gallon. What is the decrease expressed as a percent change? Round to the nearest tenth of a percent if necessary.

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The decrease is 35c

Q= X/100 of $1.37 = 0.35

1.37x/100 = 0.35

1.37x = 35 then divide each side by 1.37

Result is 25.5474453 percent, round up to nearest tenth.
Answer is 25%

The decrease in the price expressed as a percent change will be 25.6%.

  • Price of a gallon of gasoline in 1990 = $1.37
  • Price of a gallon of gasoline in 1998 = $1.02.

The reduction in price will be:

= $1.37 - $1.02

= $0.35

Therefore, the percentage decrease will be:

= (0.35/1.37) × 100

= 25.6%

Therefore, the decrease percentage is 25.6%.

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