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Finding number of books, Verna decided to sell her collection of paperback books. To Fred, she sold 2 books, and one fifth of what was left. Later to Joan, she sold 6 books, and one fifth of what then remained. If she sold more books to Fred than Joan, what was the...
Pipe A can fill a tank in 4hr. Pipe B can fill the tank in 9hr less than the time it takes pipe C, a drain pipe, to empty the tank. When all three pipes are open, it takes 2hr to fill the tank. How much time is required for pipe C to empty the tank if pipes A and B...
Write a polynomial that has a common factor in each term. Factor your polynomial.
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