Answer:
700
Explanation:
Each service's total charge consists of a fixed charge plus a charge per minute.
With both services, the first 500 minutes are included in the monthly fee.
Let x = number of minutes above 500.
Atlantic:
total charge = 30 + 0.16x
Edison:
total charge = 40 + 0.11x
Set the total charges equal and solve for x.
30 + 0.16x = 40 + 0.11x
Subtract 0.11x from both sides. Subtract 30 from both sides.
0.05x = 10
Divide both sides by 0.05.
x = 200
Each plan includes 500 minutes.
The charges are equal at 200 minutes above the included 500 minutes.
Total minutes = 500 + 200 = 700
Answer: 700