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A book publisher pays $74,200.00 to prepare a book for publication. Total costs are $5.50 per book. If the book is sold to bookstores for $19.50 per copy, how many copies must be sold for the publisher to break even?

One-third of a number, decreased by 1 is 8. What is the number?

Jennifer knows that two rectangles are similar and that the ratio of corresponding sides is 2:5. She also knows that the ratio of the perimeters of the two rectangles is 2:5. Based on this knowledge, Jennifer thinks that the ratio of the areas of the two rectangles is...