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Kylie needed 55 gallons of gas last week. This week, Kylie ended up needing 20%20\% less. How much gas is that?\newline____\_\_\_\_ gallons

Full solution

Q. Kylie needed 55 gallons of gas last week. This week, Kylie ended up needing 20%20\% less. How much gas is that?\newline____\_\_\_\_ gallons
  1. Calculate Gas Reduction: Calculate the amount of gas reduced due to the 20%20\% decrease.20%20\% of 55 gallons = 0.20×5=10.20 \times 5 = 1 gallon
  2. Subtract Reduced Amount: Subtract the reduced amount from last week's total to find this week's requirement. 5 gallons1 gallon=4 gallons5 \text{ gallons} - 1 \text{ gallon} = 4 \text{ gallons}