Two stations are 200 miles apart. Train X leaves Station A heading toward Station B at 60 mph. Simultaneously, Train Y leaves Station B heading toward Station A at 40 mph. At the same moment, a bird flies continuously between the train fronts at 80 mph. What total distance does the bird fly before the trains collide?
160 miles
The trains close the 200-mile gap at a combined speed of 60 + 40 = 100 mph, taking 2 hours to meet. Flying continuously at 80 mph for 2 hours, the bird covers 80 * 2 = 160 miles.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Hard. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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