If 25% of a population likes reading, 35% likes writing, and 10% likes both, wha
Practice Questions
Q1
If 25% of a population likes reading, 35% likes writing, and 10% likes both, what percentage likes either reading or writing?
50%
60%
70%
80%
Questions & Step-by-Step Solutions
If 25% of a population likes reading, 35% likes writing, and 10% likes both, what percentage likes either reading or writing?
Step 1: Identify the percentage of people who like reading, which is 25%.
Step 2: Identify the percentage of people who like writing, which is 35%.
Step 3: Identify the percentage of people who like both reading and writing, which is 10%.
Step 4: To find the percentage of people who like either reading or writing, use the formula: (Percentage who like reading) + (Percentage who like writing) - (Percentage who like both).
Step 5: Plug in the numbers: 25% + 35% - 10%.
Step 6: Calculate the result: 25 + 35 = 60, then 60 - 10 = 50.
Step 7: The final answer is that 50% of the population likes either reading or writing.
Inclusion-Exclusion Principle – A method used to calculate the size of the union of two sets by adding the sizes of the individual sets and subtracting the size of their intersection.
