150 men live in a certain town:

Question

85 are married
70 have a cell phone
75 own a car
55 are married and have a cell phone
35 have a cellphone and a car
40 are married and have car
30 are married, have a car and have a cellphone. How many men are single and do not have a car? How many men are single and do not have either a car or a cellphone?


I know the answer is 20. I've used an equation where I added and subtracted each entity. I also did the Venn Diagram and Subsets. I'm looking for different ways to solve this question. If you were answering this question. What method would you use?