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Answer:

% Inc = (new price/original)x 100

243/180 = 1.35 x 100 = 135%

Answer: 35%

Step-by-step explanation:

(243-180)/180 = 0.35 x 100 = 35%

You can verify this by multiplying 180 by 0.35 and adding it back to 180 to get 243.