Nancy is cleaning out her old woodshed. She saw 90 spiders, 1/3rd as many millipedes as spiders, and a number of stink bugs equal to twice the number of millipedes minus 12. How many bugs did she count total?
First find the number of millipedes: 90 spiders / 3 spiders/millipede = <<90/3=30>>30 millipedes
Then multiply the number of millipedes by 2: 30 bugs * 2 = <<30*2=60>>60 bugs
Then subtract 12 to find the number of stink bugs: 60 bugs - 12 bugs = <<60-12=48>>48 bugs
Then add the number of each kind of bug to find the total: 48 bugs + 30 bugs + 90 bugs = <<48+30+90=168>>168 bugs
#### 168