Tire repair for each tire costs $7, plus another 50 cents for sales tax. If Juan needs all 4 tires repaired, how much is the final cost?
Juan pays 4*7 = <<4*7=28>>28 dollars for all four tire repairs.
Juan pays 0.50*4 = <<0.50*4=2>>2 dollars in sales tax for all four tire repairs.
Juan pays a total of 28+2 = <<28+2=30>>30 dollars.
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