math
posted by Kelsey .
A contactor is making preparations to retile the border around a swimming pool. The pool measures 60 feet by 30 feet. The border extends 1 foot from each side of the edge of the pool. The contractor is going to use that are 0.25 feet squared. A case of tiles contains 50 tiles and costs $15.00, but there`s a 10% discount on orders of 5 or more cases.
If the contractor must buy a full cases of tiles, what will it cost to purchase tiles for the border of the pool?

math 
Steve
area of pool+border = 62*32 = 1984
area of pool alone = 60*30 = 1800
area of border = 184 ft^2
tiles per ft^2 = 4
tiles for border = 184*4 = 736
cases needed = 736/50 = 14.72, or 15
normal cost of 15 cases = 15*15 = $225
after 10% discount of $22.50: $202.50
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