Problema Solution
you need to choose between two telephone plans for local calls. Plan A charges $25 per month for unlimited calls. Plan B has a monthly fee of $13 with a charge of $0.06 per local call. How many local telephone calls in a month make plan A a better deal?
Answer provided by our tutors
Plan A charges $25 per month for unlimited calls. Plan B has a monthly fee of $13 with a charge of $0.06 per local call. How many local telephone calls in a month make plan A a better deal?
Plan A - $25 per month
Plan B - $13 + $0.06x ; variable x represents number of local calls
Equation:
13 + 0.06x < 25
0.06x < 25 -13
0.06x < 12
x < 12/0.06
x< 200 ; means that if you make more less than 200 calls, plan B would be better. So to answer the question, you should make more than 200 local calls in a month so that plan A would be better..