# Difference between revisions of "2015 AMC 10B Problems"

## Problem 1

What is the value of $2-(-2)^{-2}$ ?

$\textbf{(A)}\; -2 \qquad\textbf{(B)}\; \dfrac{1}{16} \qquad\textbf{(C)}\; \dfrac{7}{4} \qquad\textbf{(D)}\; \dfrac{9}{4} \qquad\textbf{(E)}\; 6$

## Problem 2

Marie does three equally time-consuming tasks in a row without taking breaks. She begins the first task at 1:00 PM and finishes the second task at 2:40 PM. When does she finish the third task?

$\textbf{(A)}\; 3:10 PM \qquad\textbf{(B)}\; 3:30 PM \qquad\textbf{(C)}\; 4:00 PM \qquad\textbf{(D)}\; 4:10 PM \qquad\textbf{(E)}\; 4:30 PM$