To order certain plants from a catalog, it costs $2.5 per plant, plus a 5 percent sales tax, plus $5.75 for shipping and handling regardless of the number of plants ordered. If Company X ordered these plants from the catalog at the total cost of $63.5, how many plants did Company X order? A) 22 B) 21 C) 20 D) 19 E) 18

• Let the number of plants Company X has ordered by "x".
  then, 2.5*(x) + 5%(2.5*x) + 5.75 = 63.5
  On solving the above equation we get,,
  x = 22 plants (Option A)
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