IDNLearn.com is the perfect place to get answers, share knowledge, and learn new things. Get prompt and accurate answers to your questions from our experts who are always ready to help.

Cell phone Plan A costs$70 per month and comes with a free$500 phone. Cell phone Plan Bcosts$50 per month but does not come with a phone. If you buy the$500 phone and choose Plan B, how many months is it until your cost is the same as Plan A's?
Please answer WITHEXPLANATION!