In a survey of 150 people, 80 people like tea, 60 like coffee, and 30 like both tea and coffee. How many people like exactly one item? Options 100 90 80 70
Question
In a survey of 150 people, 80 people like tea, 60 like coffee, and 30 like both tea and coffee. How many people like exactly one item?
Options 100
90
80
70
Solution
To find out how many people like exactly one item, we need to subtract the number of people who like both items from the total number of people who like each item.
Here's how you can do it:
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Add the number of people who like tea and the number of people who like coffee. This gives us 80 (tea) + 60 (coffee) = 140.
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From this total, subtract the number of people who like both tea and coffee. So, 140 - 30 (both) = 110.
Therefore, 110 people like exactly one item. However, this option is not available in the given options. There might be a mistake in the question or the options provided.
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