In a survey of 200 people, 70 said that they had not used a bus or a train in the past month. 100 said that they had used a bus and 70 said that they had used a train. How many people used both a bus and a train?
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Answer:
170 is answer
Step-by-step explanation:
Number of people went in bus = 100
Number of people went in train = 70
Answer 100 + 70 = 170
170 people went in bus and trian
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