A pet sture surveyed 674 people to see how many own a fish how many own a dog and how many own a cat The Venn diagram below shows the results Each number gives the number of people who fall into that Venn diagram category All people in the survey Own a dog Own a fish 66 44 51 37 145 113 Own a cat 71 147 a How many of the people own a fish people b How many of the people own neither a fish nor a cat people c How many of the people own both a dog and a cat but don t own a fish X