Dr. Harry wants to know how many candies Susan consumed during the week. Susan tells him she bought 3 on Tuesday, 5 on Thursday, 2 on Friday. If she has only 4 of them left, how many did she eat?
She had bought 3+5+2 = <<3+5+2=10>>10 candies over the week
She has only 4 left which means she ate 10-4 = <<10-4=6>>6 candies during the week
#### 6