If 3 workers can dig 3 identical ditches in 3 days, how many days will it take 6 workers to dig 12 identical ditches at the exact same pace?
6 days
3 workers dig 3 ditches in 3 days, meaning 1 worker digs 1 ditch in 3 days. Therefore, 6 workers dig 6 ditches every 3 days, so they will need 6 days to dig 12 ditches.
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.
More math riddles
Lily makes 4 rows of 3 fireworks and adds 2 more at the end. How many fireworks are there in all?
Leo gets 9 chicks on Monday and 7 chicks on Tuesday, then gives away 2. How many chicks are left?
Noah has 3 flowers and finds 4 more. How many flowers does Noah have now?
Ben has 7 carrots. Max has twice as many. How many carrots do they have together?
One pumpkin costs 3 dollars. How many dollars do 3 pumpkins cost?
A wall clock strikes once at 1 o'clock, twice at 2 o'clock, and so on. In addition, it strikes once on every half-hour. How many total strikes does the clock make in a full 24-hour day?