# Difference between revisions of "2011 AMC 8 Problems/Problem 10"

The taxi fare in Gotham City is $2.40 for the first $\frac12$ mile and additional mileage charged at the rate$0.20 for each additional 0.1 mile. You plan to give the driver a $2 tip. How many miles can you ride for$10?

$\textbf{(A) }3.0\qquad\textbf{(B) }3.25\qquad\textbf{(C) }3.3\qquad\textbf{(D) }3.5\qquad\textbf{(E) }3.75$

## Solution

Let $x$ be the number of miles you ride. The number of miles you ride after the first half mile is $x-0.5.$ We can write this equation:

\begin{align*} 10 &= 2.4 + 0.2 \times \frac{x-0.5}{0.1} + 2\\ 5.6 &= 2(x-0.5)\\ 2.8 &= x-0.5\\ x &= \boxed{\textbf{(C)}\ 3.3}\end{align*}