Need major help with these....

A major department store took a survey of 240 women in order to determine what type of footwear they preferred to wear on weekends. The four choices of footwear were (a) heels, (b) flat shoes, (c) sneakers, and (d) sandals. The women were divided into just two classes, namely, (a) married and (b) not married. Here are the results. One woman will be randomly selected for the questions that follow. Heels Flat Shoes Sneakers Sandals Married N Not Married What is the probability of selecting a married woman, given that the person selected does not prefer sneakers? What is the probability of selecting a woman who prefers heels, given that the person selected is not married