每日答題(正確)

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【題目】 You are an economist for the Taipei City Subway Commission. Presently, the price of a subway ride is $80, and 250,000 seats are filled weekly. The income elasticity of demand is -0.60. If a recession lowered area incomes by 5％, how many additional seats per week would the subway need?
  1,500 seats
  1,000 seats.
  5,000 seats
  7,500 seats


A:7500 seats