Cameron drives at twice the speed of his brother, Chase.  But Danielle drives at three times the speed of Cameron.  If it takes Danielle 30 minutes to travel from Granville to Salisbury, how long, in minutes, will it take Chase to travel from Granville to Salisbury?
If Danielle drives at three times the speed of Cameron, it will take Cameron 30*3=<<30*3=90>>90 minutes for Cameron to travel the same distance.
And since Cameron drives at twice the speed of his brother, Chase, it will take Chase 90*2=<<90*2=180>>180 minutes to travel from Granville to Salisbury.
#### 180