There are 12 people in Mrs. Hilt's living room. 6 people are wearing socks and 4 people wearing shoes. 3 people are wearing both. How many people are bare feet?
Accepted Solution
A:
3 people wearing both are also counted in the 6 with socks and 4 with shoes so you can't count them twice. What you do in stead is list : 3 wearing both 4 - 3 = 1 wearing just shoes 6 - 3 = 3 wearing just socks total 7 so far so that leaves 5 others that must be barefoot.