If 5 workers can build 5 walls in 5 days, how many days does it take 10 workers to build 10 walls?
5 days
Each worker builds 1 wall in 5 days. 10 workers building 10 walls work at the same rate, taking 5 days.
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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