method_spells_send.rb

class Student

  def law_fees
    21000
  end

  def physical_science_fees
    22000
  end

  def medicine_fees
    23000
  end

  def engineering_fees
    24c000
  end

  def fees(school)
    if school == "engineering"
      engineering_fees
    elsif school == "physical_science"
      physical_science_fees
    elsif school == "law"
      law_fees
    elseif school == "medicine"
      medicine_fees
    else
      20000
    end
  end
end