Calculating the Percentage of the Population that Drinks ONLY One Coffee, Tea, or Cola

What percent of the population drink ONLY one of coffee, tea or cola?

Based on the data provided, how can we determine the percentage of the population that drinks ONLY one of coffee, tea, or cola?

Answer:

The percentage of the population that drinks ONLY one coffee, tea, or cola is 70%.

To find the percentage of the population that drinks ONLY one coffee, tea, or cola, we can use the principle of inclusion-exclusion. Let's break down the problem step by step:

First, let's find the percentage of people who drink only coffee. We know that 55% of the population drinks coffee, and 15% drink both coffee and tea. So, the percentage of people who drink only coffee is 55% - 15% = 40%.

Next, let's find the percentage of people who drink only tea. We know that 25% of the population drinks tea, and 15% drink both coffee and tea. So, the percentage of people who drink only tea is 25% - 15% = 10%.

Now, let's find the percentage of people who drink only cola. We know that 45% of the population drinks cola, and 25% drink both coffee and cola. So, the percentage of people who drink only cola is 45% - 25% = 20%.

Finally, let's add up the percentages of people who drink only coffee, tea, or cola: 40% + 10% + 20% = 70%.

Therefore, the percentage of the population that drinks ONLY one coffee, tea, or cola is 70%.