Question

23. There are two telephone companies provide home phone service in New York City. Company A charges $25 monthly fee and $0.10 for one minute after 30 minutes phone call. Company B charges $20 monthly fee and $0.12 for one minute after 30 minutes phone call. By what minutes, these two companies will charge the same?
I have:
A:25.00+0.10(m-30)
B:20.00+0.12(m-30)

Answer 1

For m minutes,
A: 25.00+0.10(m-30)
B: 20.00+0.12(m-30)

So, just solve for m when A=B

Kind of strange wording for a math problem in school. The only way it would make since is if it were 2 part question to the solve for x minutes.