A biker moves 2.5 times faster than a walker. They started moving simultaneously in the same direction from the same point. In two hours they were 18 miles apart. Find the biker's speeds.

Question

Thanks a lot for my last question.

Answer 1

If the walker's speed is W, then the biker's speed is 2.5W. In 2 hours, the walker can travel 2W miles while the biker travels 5W. Since 5W-2W=18, 3W=18 and W=6. So the walker travels 6 mph and the biker 15 mph.