In 2002, the bookstore sold 1000 paperback books and 1500 hardback books. in 2003, the store sold 15% more paperback books and 5% more hardback books than sold in 2002. by what percent did the total number of books sold by the store increase from 2002 to 2003? . a. 20% / b. 60%. /c. 9% / d.15%

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?

The lengths of the two sides of a right triangle are 5 inches and 8 inches what is the difference the possible lengths of the third side of the triangle