Four runners participated in a relay where each athlete ran exactly twice the distance of the teammate before them. If the entire team covered 45 kilometers in total, how many kilometers did the third runner run?
12 kilometers
Letting the first runner's distance be x, the distances are x, 2x, 4x, and 8x, summing to 15x = 45. Thus x = 3, and the third runner covers 4x = 12 km.
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: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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