Eric has 4 ninja throwing stars. His friend Chad has twice as many. Then Jeff bought 2 ninja stars from Chad. Jeff now has 6 throwing stars. How many ninja throwing stars do they have altogether?
We know Eric has 4 stars and Chad has twice that amount, so Chad has 4 x 2 = 8 stars.
Then Chad sells 2 of them to Jeff, so Chad has 8 – 2 = <<8-2=6>>6 stars.
Altogether, Eric has 4 + Chad has 6 + Jeff has 6 = <<4+6+6=16>>16 stars.
#### 16