olymmath

AMC 10 2018a

AMC 10 2018.

Paper

Problem 1

  • Paper

What is the value of (((2+1)−1+1)−1+1)−1+1?\bigg(\Big((2+1)^{-1}+1\Big)^{-1}+1\bigg)^{-1}+1? (A) 58(B) 117(C) 85(D) 1811(E) 158\textbf{(A) } \frac{5}{8} \textbf{(B) } \frac{11}{7} \textbf{(C) } \frac{8}{5} \textbf{(D) } \frac{18}{11} \textbf{(E) } \frac{15}{8}

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Problem 2

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Liliane has 50%50\% more soda than Jacqueline, and Alice has 25%25\% more soda than Jacqueline. What is the relationship between the amounts of soda that Liliane and Alica have? (A)  Liliane has 20% more soda than Alice.\textbf{(A) }\text{ Liliane has } 20\%\text{ more soda than Alice.} (B)  Liliane has 25% more soda than Alice.\textbf{(B) }\text{ Liliane has } 25\%\text{ more soda than Alice.} (C)  Liliane has 45% more soda than Alice.\textbf{(C) }\text{ Liliane has } 45\%\text{ more soda than Alice.} (D)  Liliane has 75% more soda than Alice.\textbf{(D) }\text{ Liliane has } 75\%\text{ more soda than Alice.} (E)  Liliane has 100% more soda than Alice.\textbf{(E) }\text{ Liliane has } 100\%\text{ more soda than Alice.}

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