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

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:

1. Add the number of people who like tea and the number of people who like coffee. This gives us 80 (tea) + 60 (coffee) = 140.

2. Then subtract the number of people who like both tea and coffee from the total we just calculated. So, 140 - 30 (both) = 110.

Therefore, 110 people like exactly one item. However, this option is not available in the given options. Please check the question or the options again.