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A group of 50 travellers visiting an island are asked about their flight habits. 20 said that they would never fly with Coconut Airways. 8 said that they would only fly with Mangojet. 20 use both airlines. How many passengers would only fly with Coconut Airways?​

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Answer:

the answer is 30 because 50 minus20 is equal to30 thats all
20+8+20=48
50 - 48 = 2
2 passengers