If two painters can paint two rooms in two hours, how many painters are needed to paint eighteen rooms in eighteen hours at the same rate?
2 painters
Two painters complete two rooms in two hours, which means 2 painters complete 1 room per hour. Working at this rate, the same 2 painters will complete 18 rooms in 18 hours.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
More logic riddles
Four distinct positive integers—A, B, C, and D—are listed in strictly increasing order (A < B < C < D). Their product (A × B × C × D) is 120 and their sum (A + B + C + D) is 14. What are the four numbers?
You have three closed boxes labeled 'Red Marbles', 'Blue Marbles', and 'Mixed Marbles'. You are told that EVERY box is incorrectly labeled. Without looking inside, you reach into the box labeled 'Mixed Marbles' and pull out a single red marble. Which box actually contains the blue marbles?
If you multiply me by any other single-digit number, the sum of the individual digits of the resulting product will always equal me. What number am I?
Four houses are painted Red, Blue, Yellow, and Green, numbered 1 to 4 from left to right. Green is in position 4. Blue is immediately to the right of Red. Yellow is not at either end (position 1 or 4). What is the left-to-right order of the colors?
A row goes: rabbit, rabbit, chick, rabbit, rabbit, chick, rabbit, rabbit. What comes next?
I grow when fed, but I die when given water. What am I?