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It takes time to write books and make movies.
make a proportion 90 min/45 books = x/120 books cross multiply solve for x
how long does it take to make a crayons
zombie
To take advantage of the cheaper mailing rate.
because when you take a warm shower, the air in your shower is really warm, and when you come out, the air (which is at room temperature) seems really cold compared to the air in your shower, so you get goosebumbs.
As long as you make it take.
i think eight years
How long did it take Galileo to make the first telescope?
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how long did it take colonial chandlers to make candles