1) IF X is the first hat and Y is the second hat , then
X+Y = $ 75,12, but as Y is twice more expensive than X , Y = 2X,
X +2X = 75,12 ⇒ 3X = 75,12⇒ X = 75,12/3 = 25,04, then the price of the more expensive hat is
Y = 2* 25,04 = $50,08
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