MathDB
2023 Individual #7

Source:

April 26, 2023
2023 Individual

Problem Statement

At a length of 104104 miles, the Danyang-Kushan Bridge holds the title for being the longest bridge in the world. A car travels at a constant speed of 3939 miles per hour across the Danyang-Kushan Bridge. How long does it take the car to travel across the entire bridge?
<spanclass=latexbold>(A)</span>2 hours, 12 minutes<spanclass=latexbold>(B)</span>2 hours, 20 minutes<spanclass=latexbold>(C)</span>2 hours, 25 minutes<span class='latex-bold'>(A) </span>\text{2 hours, 12 minutes} \qquad <span class='latex-bold'>(B) </span>\text{2 hours, 20 minutes} \qquad <span class='latex-bold'>(C) </span>\text{2 hours, 25 minutes}\\ <spanclass=latexbold>(D)</span>2 hours, 30 minutes<spanclass=latexbold>(E)</span>2 hours, 40 minutes<span class='latex-bold'>(D) </span>\text{2 hours, 30 minutes} \qquad <span class='latex-bold'>(E) </span>\text{2 hours, 40 minutes}