Question

In a class of 25 student, 17 lived with both parents, 20 lived with their mothers, and 20 lived with their fathers. How many lived with neither parent?

Answer 1

Answer:

2 live with neither

Step-by-step explanation:

• Making a 2 sided Venn diagram
• Put the 17 in the middle for living with both
• Take the 20 that live wit their mother and subtract it from 17 do the people who lives with both wont be counted twice it should equal 3
• Take the 20 that live with their dad a subtract it from 17 so they wont be counted twice it should equal 3
• Then add all 3 numbers together 17+3+3=23
• the subtract 25 from 23 which equals 2