The figure to the right illustrates the demand for taxi ride
     The figure to the right illustrates the demand for taxi rides in a large city. Suppose the price per ride is initially $ 15 but then falls to  $10 due a recession. What is the price elasticity of demand for taxi rides?  Using the midpoint formula, the price elasticity of demand is   . (Enter your  response rounded to two decimal places. )     
  
  Solution
Mid-point formula:
The price elasticity of demand is -0.09.
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