Brain Teasers
Willy Wallace's Window Cleaning
Willy Wallace, the window cleaner, washes skyscraper windows every day. The skyscrapers all have 109 windows, and Willy Wallace washes 37 windows each day. There are a lot of skyscrapers towering next to each other (all identical to each other), and Willy Wallace is told to wash as many as he can. At the end of a particular day, he has washed only 1 window of a particular skyscraper. What day is this? How many full skyscrapers has he washed?
Answer
It is day 56 and he has washed 19 skyscrapers. He has washed 1 window of skyscraper number 20.Hide Answer Show Answer
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