BlueFlycom an online designer clothing marketplace purchases

BlueFly.com, an online designer clothing marketplace, purchases items from Kenneth Cole, Michael Kors and Vera Wang. The most recent purchases are shown here:

Product

Kenneth
Cole

Michael Kors

Vera
Wang

Dresses

10

22

12

Jeans

21

36

14

If one item is selected at random, find these probabilities, expressed as reduced fractions:

The probability that the item selected is a pair of jeans or was purchased from Kenneth Cole is

Solution

Blue Fly.com has recently purchaed 115 items of clothing including 21 pairs of jeans from Kenneth Cole. The probability of 1 tem selected randomly being a pair of jeans from Kenneth Cole is 21/115