The owner of a bookstore ordered 75 copies of a book and paid $1,350. The owner of another bookstore also ordered the same book and paid $1,080 for 60 copies. What is the unit price, in dollars, of the book they ordered? help

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)