medium · GMAT Quant
A freight train travels at a constant speed of 40 miles per hour. A passenger train traveling on a parallel track at 60 miles per hour starts from the same station when the freight train is already 30 miles ahead.
How many hours after the passenger train starts will it be exactly 10 miles ahead of the freight train?
- 2
- 1.5
- 0.5
- 0.4
- 0.67
Sign up free to see the explanation and track your rank →
More GMAT Quant practice
- Including both endpoints, how many distinct integer price points are in this range?
- Which of the following expressions must result in a positive value?
- Which property of arithmetic justifies that first step?
- Which of the following must also be an even integer?
- Which of the following inequalities correctly represents this range?
- Which of the following includes the number 0?
- How many unique meal combinations can a customer create?
- What is the probability that the lightbulb is functional?