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**zweevu** A survey of 225 adults found that during the last year, 45 traveled by plane but not by train, 70 traveled by train but not by plane, 20 traveled by bus but not by plane or by train, 45 traveled by bus and plane, 20 traveled by all three, and 165 traveled by plane or train. How many did not travel by any of these modes of transportation?

I'm a little confused here, I tried mapping it out in a venn diagram but it got pretty messy. The wording is a little confusing. Can someone help me solve this?