Mark gets a new phone plan that is 30% more expensive than his old plan.  If his old plan was $150 a month how much does his new plan cost?
How much more expensive is his new plan than his old plan? ** His new plan is 150*.3=$<<150*.3=45>>45 more expensive than his old plan
How much does his new plan cost? ** So his new plan is 150+45=$<<150+45=195>>195
#### 195